Telkom poor service

I once had a contract with telkom few years ago then canceled it because of its bad poor service. I decided to go for it again, now at the store vaal mall when I want to do a Sim swap as I already have a new contract and I want to use my old telkom number,i was then told that I owe R1 from the previous contract then requested for the account number so I can pay then was told to call 081180 to get the account number. I then called 081180 then they gave the account number but gave me the wrong account number. Till today nje I'm struggling to get the correct account number I then call to tell them that its not my mistake as I received sms with the telkom banking details to pay R1 but I was told to make bank statements and etc with my cost as I have to travel to the bank and to the telkom store. I only want to do Sim swap as I only have one phone using one sim