Poor service from Virgin Mobile

I renewed a contract with Virgin Mobile a month ago, received my phone (LG G4 Stylus) within a week. Having inserted the sim card, the phone showed a \no sim\" message. Tried two more card with same result and tested card on my wife's phone where it worked fine. Reported this and was promised a new phone after much wrangling. They then came to collect the phone. Yesterday to my surprise they delivered my \"old phone\" supposedly fixed but still not reading the sim card. I have been with Virgin for about 6 years and is now mad as hell about this poor service. Been without a working phone for a month now and had to resort to pay as you go with another provider just to have some communication."