Pricelock cries

I took out pricelock in December of 2020 and was billed at end of December 2020 which I took as a Pro Rata billing amount as well as the the premium for January. During my discussion with the agent that phoned me, we noted I had old decoder which is not active. I have requested that that decoder should remain off as I no longer have it and that is why the no service exist for the decoder for almost five years now. However, at the end of January 2021 my account was debited for two decoders and not one as per our agreement, secondly the amount debited from my account was almost trippled the agreed amount. I phoned Multichoice on several occasion now and was told on every occasion that either the billing department or the Pricelock would give me a call. I am waiting until today and my service has subsequently been cut over a mistake they made. I am also not willing to pay for something I am unable to use. When I spoke to Multichoice consultant I was unable to obtain a direct nr for Price lock department as the Multichoice agent was unable to help