Terrible service.

Extremely poor service and not trustworthy. We have been paying Blue Security every month without fail and this is the THIRD time they have "accidentally" debited more than the agreed amount. The just keep apologizing and saying it won't happen again and then another R3000 or R1000+ gets debited from my account the next month. I've now been trying to cancel my contract for days and there is no assistance at all, I keep getting told someone will call me back and no one ever does. Terrible service. I've just called again and someone put the phone down on me so I've had to call back, this time I got told that the department I need won't answer the phone so I should email them.. I have already sent emails and now I'm going in circles with a company thta *****s my money. I'm fed up.