Deductions after contract ended.

After 5 years of being with vodacom on prepaid I decided to port my number to a contract number after 24 months of paying in time with no complications, they still decided to deduct money from my bank account, I asked my bank to reverse the transactions and now they claim i owe them money which I don't even owe according to my contract, The cancellations department are saying my account is cleared but your legal department claim that I'm owing. I have been querying this issue for 3 weeks and still nobody is giving me an accurate answer of what is happening.

I think you should really take your customers very serious and stop creating a bad credit record for them.

Yours Very upset, Unsatisfied 7 years customer.