Incoming calls are not showing up on the right extensions

[Sdisnie]

I have two separate phone numbers on my Yealink T46G phone......All incoming phone calls are set to go to the correct extensions and are going there, however on my phone, no matter what extension an incoming caller has pushed, it flashes up under my name for the first phone number. Does this make sense? We have tried everything and can't figure out why it's doing this!