I have had a Verizon installed cantenna with internet connection to 2 Ethernet wired desk top computers and a printer for about 9 months. I have WiFi turned off and have no other devices. The advertised download in speed is 5 - 10 Mps. Three weeks ago it began to randomly get very, very slow - as low as 0.2. Usually early in the day I can get 8 - 9 Mps, but the rest of the day it goes up and down frequently. I have talked to customer support 3 times and the IT techs twice. They keep closing the ticket saying that there are no problems with the local cell tower - but the problem continues.................. I have a 10 Gb plan and rarely use more than 7 or 8 Gig. I have 2 dumb phones and a wireless home phone and from Verizon and none of those have any signal problems. HELP?