not a client but getting price hike emails

I struggled for 4 months from November 2015 to February 2016 to get Multichoice to collect my balance due via debit order. Every time my account get suspended because they did not collect the money. Every time I have to phone in spending 30 minutes at least with a callcentre agent. They even escalated it to IT and Finance and still could not get it right. In February I requested that my account gets closed. I then went into Multichoice regarding this matter. After a week he said they will load another adhoc debit order for the amount due. That debit order did not go off. I then phoned the call centre again and asked the amount due so that I can pay it over eft. I also asked for all my voice recordings with Multichoice. I made it clear that I don't want to be a client of Multichoice and that I've requested more than a month ago that my account be closed. Even after this, the agent asks me if I want insurance on my decoder! Which I told her clearly I am not a customer anymore and not intrested in any of Multichouce services. I paid the outstanding amount via eft. Today I get an email stating the price increase for my account! Multichoice you don't know what you are doing!