Unacceptable service

Unacceptable service!! Being a customer for 20 odd years im at the verge of cancelling, never having missed 1 single payment to DSTV. I switched to our holiday home on 8 July, returning home at end July and contacting the call centre advising the main and secondary decoders were off with the PVR function disabled. I requested to have it transferred back to the main decoder. Its been 3 weeks and NUMEROUS calls and time spent being told wait 24 hours, wait 48 hours and still nothing is sorted??? My billing was also mixed up, charged double and promised to resolve with feedback, no feedback received. Obtained reference number last week still without a functioning PVR