Worst internet service provider ever

This is now been over a month and still we have no feedback on our credit or service that is more down the up. They deduct R1400 as a purchase which was not authorized, but can't even get back to a person after logging numerous calls still we have no feedback this is by far the worst internet service provider ever. Dont not take out any i meen anything with them. Its a disgrace to rob people like they doing.