Connection issue

Tarry has been saying one thing over and over with out assisting me...my Internet is not working at home it's been 3 days now...it only worked for a week after they took long to install the device...and now they don't even assist me Tarry is telling me that there is nothing he can do ,..I told them to cancel their device so that I go for MWeB those guys are reliable,vumatel is something else...SADV is very horrible Tarry your service is bad