BILL QUERY

Hello, my name is Sandisiwe i took a dstv explora contract at ON AIR TV and it was suppose to be 24 months. I called the call contre to remind them that the contract was coming to an end on the last month. However they continued to bill me although the contract had ended , and it was been almost 6 months now. When i try to call them , they told me to contact the financial department. Upon calling the department they do not answer and they also not answering queries which is extremely unprofessional. I have called, sent out an email and sent them a massage on whatsapp but there is still no progress. With that being said the debit order is still ongoing they did not stop , they taking money whilst the contract has ended.