They are primarily on Instagram under the name JOHNNYBANDS27_.  The following numbers they use is 734-299-0555, 616-419-7531, 616-606-8238.  They ask you to place whatever amount of funds on a Big Vanilla prepaid card but stress that they do not need the number after you scratch off the area.  The obtain your number when they urge you to contact customer service on three-way with them on the line.  Their reasoning for being on the line is to obtain a bogus confirmation code.  When you dial in the numbers from the back of the card, the customer service representative repeats your code and they then steal your code and claim the funds.