Fed up with dstv

I regret the day that i decided to apply for the explora pricelock. For the past 5 months each amount they deduct from my account is different! And whats so frustrating is that after numerous calls and emails nobody can actually tell me WHY is it like that and nobody can rectify the problem or come up with a solution!!! Im beyond frustrated and angry because while they “regret the inconveniece” its costing me my time and money!!!!