These are CON-men not links financial.
they ring your neighbours if your numbers is not in the phone book and one of your neighbours is,
If you ring them back they try and get information (bank details ect) from you,
don't ring them and tell your neighbours they are conman and to hang up on them,
I rang after a neighbour came around saying a man (who was rude in the way he spoke to her) said he needs to speak to my daughter, i gave him a piece of my mind and the air was blue lol, he said he had mail for my daughter, if that was so then they would have posted it lol.
Don't be fooled by the scum bags.