voLTE Biggest load of junk AGAIN

Good Day 2 months ago I complained about this voLTE thing of yours that disabled my calls. I couldn't make any calls and if anyone phoned me they couldn't hear me. It was turned off and everything was working a sit should. This morning the useless thing was put back on my phone again. I am once again having the same problems and had to put my phone on 3G to make calls. I did not ask for it I do not want it. Please turn it off and keep it off. I don't want it.