Too true! They also ring me at least every 3 months or so.
I once had a cold caller from EE list off stuff like iPads, iPods etc and said "which one do you want". I said none of them and he has the cheek to say (bearing in mind he'd rung me on a Saturday no less) "so yooouuu DON'T need an iPad", in a really condescending way. Look I don't mind them calling and will say nicely thanks but no thanks, but I hate it when they're rude!
So I simply said... seeing as I'll be paying for this "free" iPad in one way or another from you (EE), no I don't want a bloody iPad. I don't have the money to splash out on one and to be honest I don't need one. I have a perfectly good laptop that works perfectly so NO I DON'T need an iPad.