Hi
Further to my original post I would like to thank you all for all your replies and suggestions, very much appreciated!
We have tried or checked almost everything that was mentioned, apart from one of the suggestions in the Motorla support i.e. trying "safe Mode" thanks 2dandan for the link, will try that at some point. Apologies to VincentD, unfortunately I couldn't quite understand what you were meaning,
My wife was in town yesterday and went to AIS to try and resolve the issue. They spent quite some time trying various things and were eventually able to make a call to my wife's phone!!! (They did say that if it happened again she might have to consider buying another phone

)
My wife had been back home for some time and I thought, I'll just try it .............. once again it came up as "busy"
I'll need to get my head round it ..... every thing seems to work fine i.e. internet on the go, making calls etc... it's only receiving calls that are the problem. Having said that it can receive calls over wifi
Anyway, thanks again your help!!
