Dstv price lock

I have been waiting 3 months for an enquire to be resolved between dstv and price lock on my dstv account. At first everybody tried eagerly to assist and help, but after explaining were the mistake on the account comes from to ever person who phones me they just stop calling and problem not resolved. I have been paying for a price lock product i returned and never installed in 2019 and they are still deducting that every month when i enquired they said it's installation fees. So I have been paying R1200 over 24 months for a dstv price that I don't have and that's not active and that was not installed