I have a Google Voice number that I set up a couple of weeks ago solely to give to PayPal, given their new horrible data-mining and cold-calling-by-anyone terms of service.
I have given this number to quite literally no one outside my lair. (And not even everyone in it!) I even added it to the Do Not Call registry. So guess what I got today that could only have come through one place?
Die in a fire, Paypal.
If you have a PayPal account, get a throwaway number for it, because the spam robocalls are coming.