I just picked up and talked to a woman who kept explaining to me i had signed up for some gvt grant and that i would receive free money. i convinced her i didnt need this free money and told her to remove my number of the caling list multiple times and she responded by saying"this is the perfect opportunity", or "this is your last chance"
if you pick up and they start convincing you, the best way to prevent callbacks is to just convince them you are not interested at all in any free money, anything they have to say, and you are perfectly happy how you are, then say something to them like "why dont you get a gvt grant if you have a shitty job like this?" that shut the woman up. I asked her a last time to take my # off the calling list and she said "err....umm..alright..ok." and although it wasnt positively reinforced, im just going to yell at them if they call me again with a different person.