Poor services

I recently signed up for a new Dstv subscription with DSTV Installer a and no communication was sent to me. I was shocked to get a message a week after my registration saying i must pay R321 or i will be disconnected. I didn't understand the message because i just joined on the 08th of Feb and the debit date is the 26th, on the 16th i was disconnected so i called in to query this to my surprise i was told i had to pay a ProData fee which was never communicated to me and that amount has since increased since it was not paid when i subscribed. I asked a Dstv consultant about this and i was told i have a 15 day grace to make this payment i was never told about. I counted days from the day i joined which was the 08th Feb to 16 Feb and that counts 8 days. How can the amount increase in only 8days and why was i disconnected in 8 days but i was never informed to pay this amount and no communication was given