Contracts not wanting to be terminated

I've taken two insurance products with FNB bank one for a device I no longer owe them for which I want cancelled and two a car insurance of which I have sold. I've sent countless emails to [Email Removed] as advised by a consultant but yet still 2 months down the line my account is still being debited. With the car insurance issue they've since told me its not them who administer it I must find out but I have documentation stating that it was initially taken with them ( somewhat perplexing). They have just passed the buck all the time and no one clearly is willing to help yet when you open a platinum cheque account they lure you into believing you a premiere banker that will deal with all your needs but are very much ***********.