Tamil Nadu State Transport Corporation [TNSTC] — Ticket money refund

There is always a issue with booking the ticket in this very poor unconvenient app where the money gets debited but the ticket gets failed to book and there is no proper response from help deskline and rude behavior to customers .I have encountered it for more than 4 times and each time there is loss of money for myself.
Very worse app and immediate reaction are needed .