Telkom with poor customer service

I lost my Prepaid sim during level 5 of Lockdown i phoned customer care to block my nunber until i do a sim swap. 3 years back i was told that i had a contract with Telkom which i never app**** for. I was handed over although i disputed the contract. Problem now is they are refusing to do a sim swap for my prepaid number which has nothing to do with any contract. They asking me to pay the outstanding balance on this contract that i do not know before they can perform a sim swap on my Prepaid number. All i want is my number back. I can't even port to a different network as Telkom is holding back my nunber mind you that i was with a different network with this number before coming to them. How i regret that decision now!! this is a number i use for my business. I can't run my business now or do my banking without this number!