Product: Debt collection

Re : Credence Reference XXXX To whom it may concern : This letter is intended to escalate an ongoing fraudulent activity related to my closed account with XXXX XXXX services, and dispute the attempt to collect the debt by Credence Collection Agency : Email : XXXX Credence Resource Management , LLC XXXX XXXX XXXX, XXXX XXXX XXXX, XXXX XXXX 
XXXX XXXX : Monday to Friday XXXX AM EST to XXXX PM XXXX Saturday XXXX AM EST to XXXX PM EST Toll free # XXXX I was not able to proceed with my decision to change internet and mobile carries from XXXX to another XXXX without charge of {$500.00} related to my past account ( closed on XX/XX/XXXX ) with XXXX  mobile services. I was trying to solve this charge for 7 months. However, I was not able to solve a problem with XXXX XXXX  due to the biased and financially falsified XXXXXXXX XXXX approach ; and XXXX charging my credit card on monthly basis without my authorization. 
XXXX engaged me into signing up for the internet and mobile service by false advertising and false promotion. As of XXXX XXXX, I was overcharged {$750.00} ( {$370.00} + {$370.00} ), was promised credit multiple times, but promises never fulfilled. 
As of XXXX XXXX, XXXX overcharged me {$500.00} for removing promotional balance. 
On XX/XX/XXXX I signed up for promotional mobile phone service for switching from my mobile service carrier to XXXX XXXX. Offer included {$500.00} credit for two new phones. Conditions of this credit was not disclosed at time of signing and no hard copy of contract was given. 
On XX/XX/XXXX I call XXXX XXXX XXXX to inquire information about phone operating overseas. I was assured that XXXX  network working beautifully in the countries I was about to visit and gave me instructions and calls, texts, and data usage rates. 
On XX/XX/XXXX I call XXXX XXXX Care to complain that XXXX network not working overseas and I was charged for incoming calls. I was giving the apology and promises that everything going to be reimburse on the next billing cycle. That is never happened. 
On XX/XX/XXXX I call XXXX XXXX XXXX ( Addendum XXXX ) to inquire info of how to use XXXX XXXX phone overseas without using XXXX XXXX. And then the trouble with this company began to the full scale. XXXX rep suggested to unlock my phones and purchase overseas SIM card and use network which working in this country. I asked what need to be done to unlock my phones. Rep told me that I need to pay off my phones balance. I agreed. He asks to hold on while he calculated how much I own. Then he told me that everything done and payment of {$750.00} ( {$370.00} + {$370.00} ) was processed and my phones unlocked. I immediately asked why it is so much. He starts to explain that this the balance I own without mentioning that it is included {$500.00} promotion. I said it is too much and asked for cancellation of order. He said no problem, he confirmed cancellation with his supervisor and XXXX see the credit on my credit card within XXXX business days. 
On XX/XX/XXXX I call XXXX XXXX XXXX ( XXXX XXXX ) to inquire where is the promised credit. After long hold and looking into notes I was giving apologies and promises that credit will be applied immediately. 
On XX/XX/XXXX regardless of XXXX  promise I filed dispute with XXXX credit card ( Addendum XXXX ), ( Addendum XXXX ). 
I spend XXXX hours XXXX minutes all together on the phone with XXXX trying to resolve the issue with no result. During conversations every time I was told that this issue will be solved but refusing to send me email which would prove their words. I was misled by sending me to XXXX store where I could get print out of our conversations notes. That was a lie because when I went there on XX/XX/XXXX their rep at the store told me that they not provide such info. Also, that was the first time I was told about {$500.00} promotion I would lose if I stop paying monthly for the phones. 
On XX/XX/XXXX I close the account with XXXX XXXX paying off balance. 
Finaly on XX/XX/XXXX I filed dispute with XXXX credit card for mentioned above {$500.00} ( Addendum XXXX ) because the way XXXX  reacts to previous dispute just ignore it and charge the same card {$750.00} ( {$370.00} + {$370.00} ) calling this charge Credit Reversal. 
On XX/XX/XXXX I received a letter from XXXX credit card that my dispute with XXXX was resolved in my favor ( Addendum XXXX ) but XXXX mobile kept charging me without my authorization. 
On XX/XX/XXXX I filed fraud dispute ( Addendum XXXX ) because sure enough XXXX XXXX charge {$500.00} on next billing cycle regardless that I close account with them on XXXX XXXX and did not give them authorization to withdraw {$500.00} from XXXX credit card. I had to close my account with XXXX XXXX XXXX to stop this fraudulent activity by XXXX XXXX. 
All above mentioned conversations with XXXX XXXX were on recorded line. My inquiries to obtain those records did not materialize because, apparently XXXX XXXX can not prove their right doing, specifically that they warn me about {$500.00} promotion. 
I do dispute the Credence attempt to collect {$500.00} due to XXXX XXXX fraudulent deceptive misconduct. 

Regards XXXX XXXX XX/XX/XXXX