Please transfer my money

A week ago Friday, I used my bank card at the ATM to deposit money into my credit card account, which I thought is my current credit card account, until I got home and realized the money is not reflecting, then I went on secure chat, that is when I discovered that I mistakenly deposited money into an old credit card account, the agent on secure chat advice that he can log it and it will take 5-6days to get it or I can call credit card department the next day and it can be done quicker. But the next day (Saturday) I call credit card department, it was not working. Then on Monday I called credit card department, I explained my story, they checked and ended telling me that that specific credit card account was with collections department ***), I was transferred to collections, explained my story, they lady transferred me back to credit card, I explained, she tried to contact collections, eventually collections, told them we must contact Legal (***opt1), but the number is unanswered. I logged a complaint on my banking app, complaint *** & ***. The first complaint they responded to ask for my banking slip and which account I want the money to be deposited to and that's it. The problem is that my reply mail with the attached deposit slip keeps failing. Nobody is calling to follow up with my complaint, I even went to the branch, but that was utterly useless. I still have no idea how to get my money from that old handed over credit card account, that has since been paid years ago. Why is it still reflecting on my profile in the ATM? How do I get it removed?