Received call cuts out when I answer

[Blumist]

I answer an incoming call, after saying 'hello'; the caller says 'hello', I say 'hello, can you hear me' then the line cuts out.

This has happened many times, the latest being when the hospital where I am receiving treatment called. Obviously, if the hospital calls it must be urgent.
I need to know why the hospital called!
Ineed to know why my calls cut out everytime received.

[caesarome]

@Blumist 

Have you reported this to Sky because at the very least they might want to send you a replacement sim to try.

[Blumist]

Thanks for reply, am trying to contact Sky, but as we know it's difficult to get through to the correct department. Will keep trying tho.:)