Unauthorized debit order

I have cancelled the services 2 months and Multichoice debits my account, and they say that the system auto reconnected my services, which is a lie, I received a call earlier this month asking me if I want would like to get the price lock again, and told the agent that I do not want to reactivate my services, Today the 26th they debit me 808 without any warning I just receive a debit notification, I called them to sort this out and the best solution offered is that I will receive the money back to my account in 7 days, or alternatively I will have to go their multichoice service centers and I will receive the money immediately, which is an inconvenience to me, I have to go the center and wait a whole line for them to rectify their mistake. And this is not the first time happening, automatically their systems activates debit orders and reconnect cancelled services.