Price Lock Contract

i called the multichoice on tel: ********** 222 on 8/12/2017 at 16:12PM to cancel my account. I was on price lock and received several emails and sms to say that my term ended on the 31/10/2017. the lady I spoke to said she cannot cancel my dstv account as the price lock department needs to cancel my acc. I told her I am not paying any further amts as this is not my problem she cannot cancel the acc. she said someone will call me from the price lock team to cancel on Monday the 11/12 but to date no one as called. I want my account cancelled and I will not pay for multichoice **** service. every time you call their call centre the call is a min of 30min. I am not willing to waste more funds calling them. please get them to cancel my service as I am not viewing dstv since the 6/12