Debit order to be reversed and cancelled...

I had a 24 month contract for 559 with DSTV, my contract expired but they continue to deduct 499 on my bank I have try calling and find the guy called kaylyn at Cape town he took my details stating they will investigate and call me back but they never did..

My 24 month contract expired all service must be terminated and no any funds should be deducted bin my account until I negotiated a new contract should I need to continue.

R499 is debited on my Account but Only one Chanel( chanel 100) is currently playing want my money to be reversed and all services to be canceled at once