updated to ios 8.2 now messages/facetime/calls all do not work
I have an iPhone 5 and updated to ios 8.2 Friday March 20th. Since the update, iMessage does not work or SMS, I cannot open messages without all recent ones going blank every now and then. Facetime also doesn't work and when I try to turn it on and enter my (correct) password, it says cannot activate check network connection. Also, I cannot make or receive calls. I scheduled a call time with Apple for help but never received a call only a voice mail and I'm unable to call back. PLEASE HELP
iPhone 5, iOS 8.2