Incorrectly billed

I received an sms from multichoice apparently owing R551.77. When I call I was told that the explora was activated and that the outstanding amount is for that. firstly, I'd like the telephone conversation where I instructed for the explora to be active. the only call I had made was regarding installation. secondly, I was given numbers to contact the DPP department the first number doesn't exist *** and the alternate number I'm placed on hold until you decided it's been too long and the calls are cut. honestly now? is that what you call service?? have someone call me to sort this urgently.