How can I find out if Leaside Lending Group a legitimate company, my son needed a 5000 dollar?

I am trying to find out the same answer as well, they inform me that I needed to pay 8 months =$1,704.32 and that i would received $10,000 the very next, business day in a bank to bank transfer. I have already been scammed for to $270 in a western union transfer, this past saturday!