Very bad customer service for almost 2 years

Payed my account up then after 3 months got a call that said I owe money and my account is in negative balance. I went to the store to ask them where this negative balance comes from.. They told me it was insurances and subscriptions.. Payed up the account and canceled everything.. after 3 months same story. Whent in payed it up and canceled everything for the 2nd time.. after 3 months same story again. Refused to pay as it is clearly going to happen again and again.. Phoned customer service explaining my situation.. The answer they gave me is to wait and a supervisor or manager needs to handle this they will be calling shortly.. Never herd from them for more than a year. Maby the resolved it?? Wanted to buy something and was told that my account is not active as there is outstanding funds.. So I called them again to get the same story.. Waiting for a supervisor or a manager to call. November 2019 the collection company called and wanted the funds. I explained the situation to them and they can't understand and can't help.. Phoned customer service about 17 to 20 times to speak to a supervisor or manager and finally got hold of 1 around February 2020. Was told that she can see that they where at fault and will give urgent matter to the situation.. Was very happy and thought it will be resolved as it is a senior at American Swiss.. To date 17th April 2020 I still need to phone and ask for answers as they don't give feedback or let me speak to the manager that assisted me... Now my credit record is negative and cant get any other debt due to this..

Now we are uncertain of our salary and need to make other plan's and arrangements for the end of the month to cover all expenses due to the shut down.. My bank cannot assist me due to my credit rating as it is negative due to the *********** staff that said they are assisting...

I have written mails to customer service also getting no response from the mails? So now u know my situation and what happened. Does anybody know what I can do in this situation to clear my name or to resolve my situation as American Swiss is of no help or urgency... I think this is very bad and poor service from them...

Thanks Willem Roos