From yesterday I cannot make or receive calls with my Lumia 550. Texting works. Everything else works. Have done a soft reset. Then I did a hard reset and when I did a recovery from Onedrive I have now lost all my text message threads. Still unable to make or receive calls. Very frustrating. Took the phone to Carphone Warehouse where I bought it and they have contacted my provider (ID) who are sending a replacement SIM. Any ideas out there? Soooo frustrating. Help!