Grabhouse — my security refund has not been credited

I was living in one of their properties and moved out more than a month ago and i was promised that the security refund would be credited in 15 days but now the concerned agent, rajat (07042790924) does not pick up the call or respond to my messages. I have mailed thrice to the company and no reply on that too. The number they have provided, call doesn't go through to that. I'm left out in the middle by their fraud.