I ticked 'No Calls' on the MyAccount Marketing Preferences when I signed up with TalkTalk nearly two months ago. This doesn't stop TatkTalk pestering you with sales calls every other day. And they are from different numbers 01162421547 and 01612448122 so its difficult to block the calls - TalkTalks's intention of course.
They say wait 28 days and calls will stop. They don't, and I didn't want them in the first place.
Never ever will I try to save a few pennies again. I'll definitely leave this aggressive load of cowboys when the contract is up..