Payzapp — amount deducted but no refund

Address: Pune, Maharashtra, 411027

Website: PayZapp

I was transferring my rent amount to the concerned person but transaction got failed and my 5000 was deducted. It has been 12 days now and still no refund. Tried calling customer care but their number is always busy. They don't reply to mail and raised concern with hdfc nodal officer. No result. I am really worried about my money because I am in dire need of it right now. Please help me.