Indian Railway Catering & Tourism Corporation [IRCTC] — pending from bank end

I booked a train ticket on 18 the december
In irctc through razorpay payment
On 18-12-18 to vpa razorpay. [protected]@sbibank (Upi ref no[protected].
On that time the payment was successful i thought the ticket is being booked
But it was not booked and showing payment pending from bank end.
I lost the priority in booking there was no intimation also very worst razor pay