All the assurities are given but NOTHING is done - ****** blind

Money taken from my account for months after cancelling my contract. I have been ****** blind by this organisation. Every month I sit for over 30 minutes on hold (calling from overseas) to cancel my contract. I am assured that all has been done only to get debited again month end for a service I don't use. This has been on going for 6 months. Nothing gets done. Shocking customer service.