Poor Service

For the last 3 week, I have been struggling with DSTV. I need to phone them every SECOND day to clear an error on my tv. This error is E16-4. My account is paid and haven't missed a payment. The response I get from them is "Sorry for the error, they will reconnect my decoder". I spoke to a manager Prince, who insured me he will rectify this error and it won't happen again. This morning the error E16-4 showed AGAIN. This is really bad service from DSTV. I can't phone every second day for their mistake.