Product: Debt collection

In XXXX of XXXX I recieved a notice that said i had an unpaid balance in the amount of approximately XX/XX/XXXX. that document was not definitive or made sense to me. Unfortunatly misplaced and my attempts to get a copy went unanswered in any case i had no idea what it I was so immediately contacted XXXX XXXX  for an explanation. 
I was informed that this was an account previously held by XXXX XXXX  for XXXX, an online jewelry store and XXXX  recently aquiredall of those accounts for XXXX, I. knew right away it was a mistake, and told the agent for XXXX that, and that in order to get this resolved in the most fair and efficent way, i need the details of this amount. I requested the basic information being item, date of purchase, and amount and i was told that information was not available. After much going back and forth and getting i decided to contact XXXX XXXX, since that is where the account came from, and try and get these details from them. I was told by XXXX  that i was not in their system at all, let alone related to the XXXX account that she was aware had been taken over by XX/XX/XXXX, I then called XXXX back and asked for a manager and explained the situation, that there is something very wrong here and XXXX  as much as confirmed that by not being able to find me in their system, just meaing that it showed some sort of discrepency. I did in fact have a card with XXXX, but it had a XXXX credit limit At this time i was preparing to relocate to north fl and although i knew that i needed to get back to this, for that time being i put on back burner, especially since i was not sure where to turn for help. i did recieve a few collection calls from XXXX  and with each call i requested the validation of the amount because I am challenging it., Those calls stopped in a short period of time however shortly after i relocated i recieved a notice from XXXX XXXX a collection agency working with XXXX, and i explained that i have been trying to get proof of the debt since i was first put on notice of it, keep in mind i had never recieved anything from XXXX  either, so the only thing i got regarding this XXXX  account, was the one notice that was more of a summary than anything else, for initally around XXXX and now its become XXXX, but back to XXXX they told me that they would get that validation and get back to me. On XX/XX/XXXX I recieved a notice from XXXX that they were ceasing the collection due to not being able to provide validation of the disputed charges and in accordance with the Fair Debt collection practices and not being able to provide me the information in a fair and reasonalbe timeframe collections they are stopping the collection activity. However on XX/XX/XXXX i was randomly checking my credit score and saw that XXXX Bank had reported the debt to XXXX  as a " charged off '' debit. it has hurt my credit obviously, and i don't understand how they can do that when i made them very aware over and over that i dispute and need want and am entitled to it, and the respond by reporting this to the credit agency. Because i have never been able to get anyone from XXXX to help me with this or address it in a serious manner, i contacted XXXX and disputed it through there system. Ultimatly that dispute was denied because i was told XXXX maintains its a true and accuate debt, even though they have up to and including the writing of this complaint. I honestly did not know where to turn or what to do, had i known this option was available to me, filing a complaint i would have done it long ago. However it does not stop there. On XX/XX/XXXX I was forwarded a notice from American Coradius International on behalf of XXXX XXXX, in the amount of XXXX. At this point i am very frustrated and scared so i decide i am going to start putting everything in writiing. I draft a letter to best of my ability to this collection agency explaining all of the facts and circumsances that lead up to them recieving this account, and i also told them the same as i have all involved since XXXX of XXXX and that is i feel this is some error that occured at some point perhaps in the transfer of the accounts from XXXX to XXXX, but providing me proof of the debt, meaning item purchased, date of, and amount, so that i can see what makes up XXXX, i sent them two notices, both signature required, one on XX/XX/XXXX and one on XX/XX/XXXX, and according to USPS tracking both were signed for. this agency American Coraduis is calling me every day Monday through Friday up to 20 or more times a day. They start at around XXXX and go up until XXXX. Despite the fact that i told them that i would address it once the validation is provided, they phone calls are unbearable. I am a XX/XX/XXXX person for XX/XX/XXXXand work direclty from my phone to catch orders. it is a very competiive field and these orders can be gone in a nanosecond so its interfered in my abiltiy to make money. i also work from the phone and when the calls come in while filling orders its also very disruptive, and my pleas for them to stop have gone unanswered. putting my phone on DND does help some, but then i lose the notification bell and its just had. 
I never walk away from what i owe, but at the same time i am not going to pay something i can not validate, especially when i feel its an error.. If a mistake was made in the transfers of these accounts before these two corporations, it seems to me i should be the last person that has to suffer the consequenses but that is exactly what happened and continues to happen and short of hiring a lawyer, which i really don't have money to do, ijust did not know where to turn, so i am hoping that your organization can help me.