Wrong billing from Multichoice

Multichoice is charging us ridiculous amounts on our subscriptions. Last month I had to pay 1515.65 for an upgrade that I won and did not use. When I saw the amount that I have to pay on my app I called multichoice call centre so that they can explain the charge as it was for a premium package and I am on compact plus. I called the call centre and they said they have escalated the matter to be resolved. The following day I saw that my account was still on 1515.65 I searched on Facebook to find one of their self service where they told that I have to pay the amount. In April I won a free upgrade which I tried to use and gave an error and I just left it without using. I explained to them that I did not use the upgrade as it gave me an error and the person that was responding said to me maybe it worked I said no ot did not. Which by the way I had a similar problem with the billing earlier also charging me more I query the amount and it was cleared. With this amount I called again on Wednesday 28 July 21 and the lady that I spoke to said me they will change my debit order to cash payment and I just have to pay my monthly subscription why thy working on fixing the error boom on Friday the debit order went through. And my debit order normally goes out on the 26 or 27 of each moth but to my surprise it has changed I don't know why. Multichoice it's a reap off this thing must be stopped