Exclamation Can't Recieve Calls on GSM/ WCDMA auto and GSM/ WCDMA/ LTE auto

Hi there

Would like some help please.

I have an M8 S Off, running the latest ARHD 11.1 with latest firmware.

For several weeks I have been unable to receive any calls in GSM/ WCDMA auto and GSM/ WCDMA/ LTE auto.

I can however, receive calls when I select GSM only.

I have contacted Vodafone, checked newtwork coverage etc with no success. I have tried everything including fresh install etc.

Any help would be appreciated

Thnk you