I have been having problems for two months with my HT502. Previously there were very few problems for the past 2 1/2 years. I have been in touch with customer service and had service tickets and new software down loaded to the HT502. I believe the issue is the HT502 is simply over heating. When I notice (several times daily) that there is no longer a dial tone available and restart the HT502 it feels quite hot. I mentioned this to customer service but never got an acknowledgement. At this point Voipo service is more of a problem than it is a service. How do I cancel the service and move my phone number somewhere else?