you ring the escort and she says I accept Amazon Vouchers etc only.
fine you say, I go to shop and buy
you get voucher in shop on your way to her destination and before you are given the apartment number you must first give rub off and reveal the code number (bit like rubbing a lottery ticket and revealing -100 euro) she will ask for code number
once you give the code and its correct you are then told there a fire just started in the apartment or the dog done a leak on the bed and to call back tomorrow,
she's off to do some shopping at Amazon and you're off home with heavy balls and a sad face
Thats basically how it works