DSTV price lock ****************

Last month 25/09/2019 i my wife's bank account was deducted R1078.00 for price lock for last month. This month on the 25/10/2019 her account will be deducted R992.89 and we sign or agreed on when we took the price lock. The problem is that DSTV is clearly in breath of contract and when I phone the call center *** they will escalated the issue from the 27/09/2019 not even a phone call from the team leaders and how long does it take a whole month. When I check my invoice for the month for August, July, September it state 959.00 and where do DSTV come up with all the other amounts. Tried to call the service center and thye keep you on till the phone die in your ear. We too out anything extra to increase the price. I need someone to explain to me and why the price increase if they advertise that you will only pay R959.00 per month then change the price that you call day light ******* and fails advertising Customer number: ***6