Cell C is a **** altogether with their lawyers!!!

I had a contract with cell c that was for 24months,so before the contract ended I sent them an email reminding them that this is my last payment & I don’t want to renew my contract with them meaning they should stop debiting from my account,they carried on debiting from my account even after the 24months that was agreed upon.I tried sending them emails-my emails were completely ignored-I also tried calling them numerous times to cancel this ongoing contract they made me hold on the line for hours asking me security questions than after that they’d say they putting me through to the cancellation department than they’d drop the call on me-this happened more than two times.I then decided to move my money from my account so Cell C won’t find anything when they try debiting as it’s been way over 24months.Cell C then decided to hand me over to their lawyers.My question is, when cases are handed over to these lawyers-do they even do some sort of investigation to find out who’s wrong before going and putting the clients name as a “bad payer!”