Anybody using the above for their mobile . "Three" just texted me to say that they're allowed (?) to increase my monthly payments by 2.7 % . from Apl. 1 . Not bliddy likely they aren't , I've a asked them for a migration code , and I'm contemplating using Giff Gaff sim only . Any comments on that . I've tried to contact "O2" and"Vodafone" this afternoon , but getting through to them is as bad , or worse than getting through to any of the service industries , with their web sites looping back to the starting point , and the on line chat simply blacking out . Any recommendations . I should say that I've been thinking of ditching "Three" for a time , as I'm fed up to the back teeth with their notifications and text messages constantly coming through .