IRCTC/online Ticket Booking — While tatkal booking payment portal exit

Address:	Thane, Maharashtra, 421501
Website:	IRCTC

Dear sir,
You want india to be digital and make payment through online transaction. While booking a tatkal ticket on irctc from home, payment portal exit twice showing "payment error". Then message comes amount is debited and transaction details shown as "reservation failed". What is this?
I what my refund as soon as possible. If customer can't book their ticket online then what the use of irctc booking site.
This indicent happened twice with me. I am fend up with this site and its usage.
You making us fool and looting us. Jab payment error hai toh apne amount debit kaise kar diya...
Incident date (07/05/2017, 06/05/2017, 05, 05, 2017)