Wrong information and never give feedback

According to debt buster my one of my account's was paid-up in 2021. When I called the company they said no debt buster stop paying them, and I still owe a big amount of money. After contacting debt busters to resolve this issue. They said they will dispute this. Now suddenly I get an statement that from this month on I need to pay this account again. NO feedback at all, because this is debt busters stop paying the account and on several calls they told me no this account is paid-up. No I am trying to call debt busters several time because I want to know HOW they gonna fix this problem because since last year when they stop paying that account, interest was been added to this account, not a little but a lot of interest, now everytime the person who helped me is very time busy and will call me back. Trying since last week, emailing and calling and still no feedback. Today I got an statement from the company just stating that I need to pay the amount outstanding. and this is not the first time they told me the account was paid-up and suddenly I get an call from a lawyer saying I need to pay an account because debt busters stopped paying the account. And all Debt Busters can say is , Oh it was an system error.