really bad and fob off service

Ordered a unit from the sales rep. tried to deliver a second one. Called Cape Town to inform them, they didn't know. the rep came out and had the unit working. the flowing day it stopped working, left a number of calls to the rep, as he said any problem's call me. never did. Call their tec dept. , tried all things, started to work. Then stop working again. called the rep, no response. Called the tec dept. Three times the fobbed me off, saying its the network now, anything to get me off the line, Called the rep. no answer. put my phone on private. FUNNY, he answered. ask him to come tomorrow, he said he would call to make a appointment. I'll wait and see.