******** Behaviour from Supersonic

I requested that a change of ownership be done on my account eight months ago. The change of ownership was successful and the account is now registered to a new owner. Yesterday, Supersonic decides to deduct a monthly fee from my bank account. I did not authorize this, nor am I a client of theirs. When I phoned them to resolve the matter, they advised that I cannot change the banking details, only the new account holder can. Needless to say, an hour and a half wasted on the phone ended in a promise to call me back before the end of the day, and I am still waiting. This is against the POPI Act and in my opinion, can be seen as ******** behavior from the supplier.