LG V20 phone of the year 2016

In January I did a up grade through Vodacom and on their recommendation switched from Samsung to LG (LG's V20 which they told me was the phone of the year 2016 - sure sales person gets a kick back for every phone they sell) On getting home I was and am still not able to get any cell phone signal on my LG, We have fought with Vodacom since January about this issue as its both my cell phone and my husbands - once you leave the house you get to be able to make calls - as we are in a dip Vodacom said that maybe we were not getting signal so after many fights with them in Sep they came and put a booster up in my house. Well my LG still says emergency calls only. I lodged a complaint on their web page which to date no one has rep**** to - I then called them and struggled to get them to understand that my whatsapp and e-mails work fine as I am on my homes wi-fi but I am not able to make calls, receive calls, send or receive sms's in the area of my house - they even told me to take my Telkom wireless router to go have it checked - not sure why that would affect making calls. My Samsung works 100% anywhere in the house. So LG was going to get back to me which now two weeks down the line no one had called me back after for a week when they were trying to pass the buck they called daily - so I called to day again (from my landline) and halfway through telling the person on the other side what the issue was they put the phone down on me. So now I sit with a phone that Vodacom bills me for every month that does not work. I work from home so it has bee a year that has been very frustrating since changing from a Samsung to a LG.