Ibibo Group / Goibibo — Delay in refund all team are fraud

I m booked hotel from goibibo for my friend but due to chek in denied issue company customer care give me full refund behalf on cancle the bookings then team is initiated a refund on 4th of May but till date refund no credit i m also call on goibibo more then 200 times .but all team are said please wait 72 hours then no response.i m very frustrated