Product: Debt collection

A representative from RMIServices, LLC out of XXXX, GA contacted me regarding a debt owed that is a legitimate debt but a discrepancy in the amount. Nonetheless, after they contacted my mother as well as my husband on XXXX/XXXX/15, I bought into this settlement and made arrangements to pay this debt. After careful consideration, all I wanted to do is request additional info that even the bank suggested I request. I called to inform RMI that I would like to revoke the agreement and after further investigation, I will reconsider once I have the information that as a consumer, I am entitled to. Spoke with XXXX XXXX, XXXX and before I was even able to get the info that I was requesting, she immediately stated she had just received something today in regards to this matter and that she " declines '' my request for revocation of the agreement and she felt like she had provided more than enough information and good luck in the future and hangs up the phone as I was trying to talk to her. Here are the issues I have with this. Number one, they are not to contact my mother, husband or anyone else in regards to this and stating that this is a very important matter, its urgent they speak with me today and stating, " they are trying to help me '' for this had my mother very disturbed. Secondly, Ive received nothing in writing from this company which they claim to have sent. Three- They have disclosed a legit debt but questionable amount and the info that I was going to request it writing is as follows : Name and address of the creditor to whom the debt is owed as well as the amount and the account number. 
If this debt started with a different creditor, provide name and address of original creditor with account number and if there are names I may know or be able to refer to this company as, please provide this information. 
Provide a copy of the written agreement that created the original my original requirement. 
Copy of last billing statement sent to me by this creditor. 
Amount and date this agency obtained this account and the amount owed at the time they received it. 
Prior to to the fact that I was deliberately hung up on, This is the information I was trying to obtain but in writing. Never once did I say I would not pay it but that I was revoking my arrangements that were made yesterday. The intention was to obtain more information on the company that is requesting funds to ensure legitimacy prior to auto withdrawals from my account. On my behalf, I should have investigated this company prior to making those arrangement as my goal is to pay off debt to improve credit. HOWEVER, and I will provide an additional document that states, my mother nor my husband is to be contacted in regards to this matter in the manner of urgency that left my family worried since this was deemed necessary I contact them today and in regards to an URGENT MATTER. As a result of the lack of friendly customer service, the worry this has caused my family members in addition to the numerous calls daily and unwillingness to provide me with the information I was trying to request at the time I was hung up on, I have no intention of dealing with RMIServices for collection of this account .If they are not willing to sale this account to an accredited XXXX company, I will locate a lawyer who may obtain the information I requested but I will no longer accept any calls from RMI nor will I be obligated to make any payments on this debt for lack of supporting documentation. 
Thank you, XXXX XXXX