Monsterindia.com — refund of the money we paid

I was asked to pay different sums of money in different installments at different intervals and was promised a refund within half an hour of last payment. The last payment was yesterday at 4 pm and i still have not heard regarding the refund. The calling numbers i was given are not responding and are also declining the calls. Also, i was told that i would receive my office visiting letter by today afternoon but it's already 7 pm and i still have not heard about the letter or the money to be refunded.