DSTV Multichoice can not solve a unhappy client's query

I am a price lock client who's contract is ending this month.3 Months ago they stopped giving my price lock discount and as a result my account has gone into arrears.I have been paying via debit order for most of the contract but changed to paying myself after i have noticed the extra charges.in a nut cell:I have paid for the duration of my contract but they still disconnected my subscription even though I made a paid of R900 last month.My total amount that i have paid over the two year amounts to more that R20 000 rand and this is how they treat me.I have been loyal for the full extend of our 24 month relationship,but this loyalty is being rewarded with my query not being sorted out at all and as a result my account is in arrears.This is not my doing.I spend over 2 h30 today calling from my cellphone only to be told that i need to wait another 48 hours for my query to be escalated.I expected better from a company that is listed on the JSE.Your customer service really sucks and as a result you are loosing a loyal customer.