If you have line rental and calls with a provider such as talktalk and you want to leave do you still have to return the line back to bt first before you change to a new llu provider, i know this used to be the case but i have been told this is no longer and you can go llu to llu as the rules have changed, he also told me that i don't need a mac for me broadband as they can do it all for me, im sure this is not right.