My numbers in my contacts have spaces in them like this:
07 936 73 83 67
and when I try and call someone it says there number is barred ?
Presume it is an iPhone. Turn off 'dial assist' that should sort it.
Yeah, Apple seem to be doing some funny stuff lately, my other half's iPhone contacts went like that about a month ago.
We had to turn the "dial assist" off, then go into contact preferences, chose another country format and then back to UK format :-)