Beware! - Another way of scam going on

In the month of February 2022 I was searching for a baby sitter for my 2 yr old kid and posted an ad in Quickr portal. Next day I got a call from Banashankari Services (8660735594) he introduced himself as Kushal Kushi  and he spoke very nicely to me and offered a good deal. He sent few baby sitter to my house for interview. When I finalized a babysitter he asked me to pay 15500/- as the service charge and once I'll do the payment they will provide the service agreement and the babysitter will start working from next day.