haha, one of my colleagues used to do it. somehow his phone number ended up on these lists and he used to get 2-3 calls a month, at work. Everytime he got a call he would ask us to be quiet (we have an open office) and then the fun would start - this colleague was so good in playing dumb, it was super entertaining. One day he got tired and asked the scammer if he would like to learn programming and that he was willing to teach if he wanted to learn.  Nothing much came out of it but the calls stopped after that. Fun times.