Why was it not made clear to us that although weekend calls are free they are NOT if you phone a mobile number. Luckily it only happened once as I was returning a call, normally I use my mobile. Seems unfair to me.
it does say "The inclusive calls in each plan include landlines (numbers starting with 01, 02, or 03), 0870 numbers, and Virgin Mobile numbers. But it’s only free for the first hour, so remember to hang up at the 59-minute mark and call back again." So only calls to Virgin mobiles are free.