Calls not coming through

[Trace62]

Most of my family have sky sims. My husband has never been able to ring my mobile (says I'm unavailable )but I can call him.

My daughter who has always been able to call me was unable to ring last night (says I'm unavailable) and when I tried to call her it would not even ring. 

What is happening. If this can't be resolved I'm going to have change networks.

[caesarome]

@Trace62 

Have you ever been abroad with this phone you have got ?

[Trace62]

No not been abroad. My daughter has never had a problem calling me before. 

I have checked the block lists but they are empty. There's nothing obvious as to why this is happening.

[Lilac21]

I have the same issue, for one of the SIMS it will frequently say number not recognised, which will really confuse people trying to call

[Trace62]

Strangely my daughter can now call me but husband still cannot. I have  checked the block list and the do not disturb but they are empty on both mobiles. It's really strange.