I had a payment plan on medical bills owed starting XXXX they stated they have several other accounts linked to me for a total of little over {$3200.00}. I at that time set up payment plan on the account to pay {$150.00} every 2 weeks on Debit card which started in XXXX & continued thru XXXX in which my card had expired I then called & spoke to XXXX asked for my balance @ the time & my balance had increased to a little over {$3400.00}, I asked how it increased paying {$300.00} a months she said the intrest is 1 % per account & I have XXXX accounts with them, I advised her I did not have XXXX accounts @ that time I advised I was willing to make payment arrangements but I want a individualized billing if charging fee 1 % per account she refused I asked for manager she refused sd XXXX was not availabe asked for a mgr to call me back I never received a call back I also never received individual billing either I on XXXX received a notice that if I do not arange payment they will forward to litigation, on XX/XX/XXXX I called spoke with XXXX XXXX I asked for exact date of speaking with prior rep XXXX on the account in XXXX or XXXX she said no record of speaking to me around that XXXX & nothing for conversation she completly disregarded my questions & concerns & advised me now that my balance is {$3500.00} I again tried to advise XXXX XXXX of my concerns she refused individual billing that is not how they do things thier I advised to speak to mgr I spoke to XXXX XXXX who stated was a manager I again asked for individual billing advised her they are linking incorrect & over charging she to refused to listed to what I was trying to explain to her & said that I was cutting her off from answering my questions said they ony submit XXXX bill with a list of providers & intrest is billed per account. I again advised her willing to make payments on the account when I get a individual billing for each account they state they have in their office she refused she stated I was over talking her so she could not answer my questions she said is forwarding to littigation they cant wait forever for payment on account.I have been denied a individual billing of accounts they state they have listed in their office ( that come over individually ) even after I had been paying them {$300.00} plus a month my debt the state I owe increased not decreased