Troubled Experience

I have been an Xfinity Customer for just over a week, and could not be more displeased with the experience. Below is a timeline of events from the time that I began my service:

-July 30th: Service began, gateway was picked up and attempted to connect. Gateway could not connect. Contacted Xfinity support and was given a technician appointment 1 week out

-August 6th: Technician arrived late, and found that the gateway wasn't able to connect because it was the incorrect gateway. Technician retrieved the correct gateway and was able to reconnect. 
-August 10th: New gateway disconnected and I contact Xfinity Support. Unable to troubleshoot, and support confirmed yet another faulty gateway. 

I am now scheduled to have my 2nd technician appointment on 8/17. 2 full weeks after beginning my service. At this point I have had functional wifi service for a total of 4 days. I request that my appointment be expedited. 

Please assist with this ASAP.