Incompetence- Double Debiting

I had a pricelock deal with Dstv for the Explora 1 for 24 month which concluded at the end of Feb 2017. In August I app**** for a new Pricelock deal for the Explora 2. When I app**** for the new pricelock deal, the consultant I spoke to picked up that the previous pricelock deal was not Cancelled on their side. But she sent an escalation to the Pricelock team to cancel It. I followed up on this on numerous occasions and was assured that it has now been resolved. However on the 26-09-2017 I followed up with them again to check how much will be debited from my account. I was then advised that there are 2 pricelock plans on my profile and the Magtape has been sent out to collect on both. I then advised the consultant that this is incorrect as the other one was cancelled as it concluded in Feb already. She again escalated it to their Pricelock dept, and she said they will contact me regarding the refund. On the 28-09-2017, my account however was in fact double debited - an amount of R1834 was debited on my account, and in following this up with Multichoice, i was again advised that i was debited for 2 Pricelock plans, the new one for R1309 +R34 (box office) and on the "OLD" pricelock plan an amount of R489. I find this incompetence Highly unacceptable, as this issue was identified a long time ago, and should have been resolved before it now costing me money. And to add insult to injury, since this query has been escalated, I have still not received any feedback from the Pricelock dept. I really need this query to be resolved ASAP