Poor service from DSTV accounts

I have been a loyal Dstv customer and every year for the past 5 years I activated dstv at my holiday home for at least twice year. Today I received a sms stating that my account will be debited for R5588.17. I called the DSTV call centre and the agent told me that they had a problem with customers with holiday viewing and that these customers are being billed in advance up to December. I told the agent that this is unacceptable and I would like to speak to a manager. I was told that the managers are in a morning meeting and that someone would call me back. It is now 22:20 and I have not heard from them. I was also told that the debit order can’t be changed as it is too late for debit orders on the 19th. If I get my bank to reverse the transaction or let the debit order bounce, I will be reported to ITC which will affect my credit rating. If DSTV knew they had a technical glitch why didn’t they reverse or stop the debit orders. This is unacceptable from a company that is suppose to be reputable.