VOX takes 3 months to troubleshoot hardware issue after upgrade

In November I was offered an upgrade of my existing YahClick package to uncapped and to 20MBPS/6MBPS. They replaced the dish and the modem and left the WiFi router and Supafone as was. Since the upgrade the Wifi connectivity has been very slow to the point that I have been unable to use the phone. since December I have sent over 11 emails and called the helpdesk numerous times on the ticket they opened for the problem. The technical team did dial in probably 4 or 5 times and on-site technicians also attempted to resolve the problem on the 28th of Feb. The technicians escalated the call to the core team to replace the wifi router as it is possible that the new dish and new modem are not compatible with the router. They do not communicate except to send my monthly account and quotes to replace the telephone instrument which their technicians said was not the problem. I am seriously disappointed with the service and am unfortunately stuck in the contract now. Ticket VOX***4