Bad customer service

I have signed with Multichoice for Compact plus on pricelock for 24 months in December 2019 and all was going well until in April when I received an sms informing me about my debit order which was lesser than what I am suppose to pay I then contacted Multichoice by telephone on the 26th April around 14:55 ref ***0 was promised to be contacted but still today . I followed up with Multichoice was told the reason I am paying less for that month is because I won free upgrade for a month to premium so I let it slide but different amounts kept showing on my profile since then and different amounts have been deducted and way less than what they suppose to deducted , last month was told I have credit hence they will deduct less and I told them they need to deduct what I am suppose to pay because if they debit less I won’t be liable for their mistake as I pay them via debit order . On Monday I received an email from Multichoice saying that I have downgraded and immediately send them message that I did not downgrade my subscription and how do I downgrade if I am on pricelock so since Monday it has been back and forth messages with no solution from their end . Problem is now we can’t watch our favourite shows so told them now to sort it out or cancel and I won’t pay any penalties as they are the ones defaulting our contracts and was told I still need to pay . I am not happy and have my conversations between Multichoice and myself since from April until today no joy from their side .