PVR Cinemas — Did not get movie tickets after paying online

I paid for 2 tickets for a movie at PVR cinemas at VR mall Chennai, and paid Rs.473.40 via Google Pay, and the amount is debited from my account and received by PVR Cinemas. I however did not get any confirmation nor did I get any tickets. I tried calling their customer care number several times but always an automated voice message said all executives are busy . I want the refund or tickets.