My telephone number seems to have changed when calling out and my correct one is not working

[LVW]

When i call out the telephone number is a different one to mine and when people call my number it now doesn't ring 

[Mark39]

Have you recently switched to Sky? Or changed your broadband/phone subscription?

[LVW]

No changes made at all. 

[Mark39]

It sounds like a fault, then, which you'll need to report to Sky. It looks like your line has been inadvertently crossed with another by Openreach, probably during repair or maintenance work. Call Sky on 150 (free) to report it.

[LVW]

Thank you