Totally disgusted

I have never in my life come across such poor customer service and blantant ****************. I had taken 3 blankets on credit from homechoice and unfortunately fell behind with payments. They then called me last September 2020 to arrange a payment via debit order to which I agreed. Then in December 2020 an agent from homechoice called me to advise that my account was now fully paid following a successful collection. A few weeks later a company called vvm called to say my account was in fact not paid up and that I still owed R1 278. I was was shocked and called homechoice immediately but I wasn't assisted as the agent I spoke to told me that the mobile number I gave them didn't correspond to the one they have on record, strange because how else did vvm get my number. The lady did however say that I indeed behind with payments. This vvm company kept calling and calling and eventually I agreed to making an eft payment to homechoice as this is affecting my credit record. I made payment on 26 March 2021 and 3 working days later called vvm to check if they received the payment to which they confirmed not. I then asked for an email address to send the proof of payment to and was told it would be sent to me. This wasn't done and then I called them again the following and they still hadn't received the payment. The day after that they send an sms saying they haven't received the payment. I have proof of payment and nowhere to send it to. I have gone back to my bank statement and realized that I've actually overpaid these people and they're still trying to get more money from me. I'm totally disgusted and frustrated that a company I trusted would do this especially to someone who's unemployed.