Non-reliable service

I've been an Xfinity customer for a long time but when I moved into my new home 5 years ago I've had nothing but problems. Our service keeps dropping or freezing and is not reliable. At one point in time it increased to 15 to 20 times a day we had the teams come out to our house and check our house The cables on the inside were fine however the cables on the outside needed to be replaced cuz they were going bad they were replaced. We are still dropping but not as much I was told by one of the texts it's a greater service issue area. Meaning that the equipment and infrastructure is old in my area and we're going to continue to have these problems until your company upgrades the infrastructure in the area. There is no time frame for that and request have been made. We are paying for service that keeps dropping or freezing and the worst part about it is if I don't pay my bill my service gets cut off but you can give us unreliable service and not have any consequences. 

In addition to this through this whole process every time I complained the problem from the customer service was we needed more service. We needed the more expensive modem the more expensive plan to get the coverage we needed. Each time I've upgraded but as this process went the text on the field told me that we would never get above 500 megabytes per second in my area due to an old infrastructure and too many customers. So why in the world does your company sell me the thousand megabytes per second knowing that we cannot get that. I went into one of the Xfinity stores and told them that and they said do not ever deal with Xfinity customer service because they are always wrong and don't give you the right information. So I have unreliable service I have unreliable customer service I'm paying for a product that is perfectly okay with not being given to me so I'm a little bit confused