Xfinity Comcast Xfinity Unethical Practices Baltimore Nationwide

We had contacted Xfinity/Comcast to set up a thermostat that would allow us to remotely set the temperature of our home on 3/19/2015. They were supposed to come on 3/21/2015 to install the thermostat but never showed. On 3/23/2015, my husband contacted them again to set an appointment. The customer service representatives were unable to provide a reason for their missed appointment that Saturday. We set another appointment for 3/24/2015 between 1PM and 3PM. The technician did not show up until 6:30PM. He started working on the thermostat but, when asked how much longer it would take (around 8PM), the technician said that he was almost done but that we wouldn't be able to get heat because "the lines were backwards". The technician was getting ready to leave our residence, knowing that we had no heat, My husband asked him to replace the original thermostat as it would be about 32 degrees and we have four children (two 8-year olds, one 6-year old, and a 6-month old). He worked on the original thermostat for about half an hour and then left our residence without notice. The heat was not connected to the thermostat and the thermostat was hanging off of the wall when he left. After multiple attempts to contact Xfinity/Comcast, we were unable to get another technician to our residence and it was unclear whether or not they would bill us for the "service". They also refused to provide a name or ID for the technician so we could file a formal complaint. My husband was on hold for almost an hour and a representative disconnected the call twice. We had to call an emergency service to fix our thermostat and hook it up to the heat which costed $75.