Product: Payday loan, title loan, or personal loan

I had a personal loan that was taken out through XXXX XXXX and made my last payment to them on XX/XX/2019 and have my debit card receipt to prove it. I called XXXX XXXX to see about making my payment in XX/XX/2019 and an individual from World Finance answered and I stated I was trying to contact XXXX XXXX and the individual pointed out that XXXX XXXX went out of business on XX/XX/2019 and that they bought all their accounts. I said that I was looking to pay on my loan but I do not have any contract with Word Finance. The individual asked for my name and after establishing that World Finance was trying to service my loan the person then stated that I was behind on my account and had not paid in several months. I stated that was wrong and that I did pay on my account and was asking where my previous payments have gone since I had made payments and had the receipt to prove it. The person then got rude and obnoxious and just wanted to argue. I hung up and contacted World Finance in XXXX, Illinois and spoke with the office manager there and his name was XXXX. I informed him of the situation and he then looked into the account and stated that he seen where there was a lump payment on the account the day before XXXX XXXX closed and asked if I made that one. I told the manager that I did not but when I called XXXX XXXX earlier in XXXX and made my payment that the office manager at the time stated she could not find the payments that I had made an asked who did I speak with. I told her I did not recall and that they did take my payments and that I have the receipts from my debit card to show my payments. The office manager in XXXX, Illinois, XXXX, then stated that he would do an investigation into the account and get back to me. I stated that I would make my payment then on XX/XX/2019 and XXXX stated that If I made the payment that day it would bring my account current and that after a couple payments my payments after that would drop from the {$87.00} that they were to {$70.00} and then the account would be back on track. I asked XXXX to investigate where the payment for XXXX was that I made and see why my other payments that I had made were missing then showed up on the account in one day when I never paid like that. I then waited for about a week around XX/XX/2019 and asked to talk to XXXX. An individual named XXXX then took my call and stated XXXX was on vacation and that she would call him and email him and have him get back to me. I never heard anything back but received a receipt in the mail from World Finance stating that I was behind on my payments and that the missing payments on my account that XXXX said showed up paid on the day prior were not there now. I then contacted World Finance and asked what was going on and XXXX stated I would have to wait for XXXX to return and contact me. I was then asked by XXXX if I wanted to make another payment and I stated No because my payments are clearly not getting processed except that one payment that I just made prior and would deal with XXXX the manager. I did not hear back from XXXX until XX/XX/2019 and he left a voicemail. I talked to XXXX briefly who claimed he was trying to reach me several times and I stated he was wrong because his office called and got me and I only got letters from World Finance asked me to renew my loan and that my payments from XXXX XXXX were not showing when he stated they were on the account. I told him that he did not try contacting me and that this was the first time he even tried to reach me and that I notified the Attorney General of Illinois of the loan practices of World Finance and that was by letter and that is the only reason for his call. The Attorney General advised me that they tried  contacting World Finance and they did not receive any response and to further my case to the appropriate agency and or file a case in small claims court. World Finance has not only lied to me multiple times but have lost payments and have not credited the account.