Unhappy with poor service

I have been trying to get through to the call center for days now. Their different numbers are of no help.i tried to cancel and was put through to the retention department which kept me on the line for 30 min to hold to speak to a consultant. I had to laid twice airtime to cancel. I emailed thrm but no response. I called, unable to get through. There service is pathetic and waiting period for attending to a call. It's even worse. I just want my contract to be cncl ASAP. Renee ***