HORRIBLE SERVICE

I have a contract with OnAir for a Dstv explorer. From the beginning of this agreement I've had issues 1st they double debited me claiming I agreed to a additional benefit, I'm still waiting for sales call to confirm that I agree and now every single month they have collected their money from my account through debit order however one month in particular their debit did not go through cause my pay day was for Sunday but my salary only reflected the Monday they immediately stopped debiting my account. Earlier this year I received a call from MBD debtors claiming that my account is in arrears for R1120 which I paid off within 3 months directly into OnAir TV's Absa Account. Last month I steadily I received a other sms from MBD stating I own R320 which I paid directly over to OnAir and mind you they also debited my account with a R79 however this June MBD Claims there is R320 outstanding Really now how many R320 must pay. I have sent enormous emails to OnAir to advise me on how much the outstanding amount is in order to close the account. NO RESPONSE. I DO NOT RECOMMEND ANYONE TO TAKE A CONTRACT WITH THEM. THEIR SERVICE IS BAD