On going PVR issues

My PVR has not worked for over a month. I've been in contact with technical support three times, each time took an hour. No one was able to fix the issue, tried every trouble shooting steps multiple times without a resolution. Yesterday they sent a technician to my home, after an hour and a half or so the PVR started working. The very next morning I checked and the PVR is not working again. I'm beyond frustrated, why can't Telus resolve this issue, why can't I escalate this problem, why can't Telus send a knowledgeable technician to resolve this issue. I called the technician and he said he would come back when he had an opening in his schedule. This is getting to be ridiculous, why can't Telus support their products and provide timely competent service .