I'm trying to phone BA to change my flight home at the weekend.
I have a UK mobile which shouldn't be a problem but I'm getting a 'your call cannot be connected as dialled' message for all the numbers that I try.

Dialling the UK 191 number gets a we're busy - try later response.

Any ideas?
The numbers that I have are 1 800 452 1201 & 1 800 247 9297
+1 doesn't work either