refunds requests simply ignored

DSTV deducted funds from my account from August 2015 to February 2016. I sent them an email terminating the service preAugust and they acknowledged that there is no service under my name and yet continued billing me. I have requested a refund of the for the months August to January ( R1054 x6 = R6324) plus fees i incurred from the bank to reverse funds for February. Requests per email are just ignored and at the last communication i was referred back to a department which says there is nothing they can do. They have been acting plain stupid . Reference number of email trail #***