18% of network speed

95% of the the time, the speed is below the 2gb...but lately it has been so slow that even shows are buffering. I've brought this up to customer service before...they've had techs out here treating stuff...then some more advanced techs testing inside the house but also the community box....never been fixed. Didn't their prices just go up because of "excellent service" they're providing? Do I get to pay 18% of my bill since I'm only getting 18% of my speed? Come on xfinity....get your [Edited: Language] together