Cleartrip - Reservation portal failed but payment sucessed and reservation confirmed later too. which made me ha

When i booked the trip (ID **********) and paid successfully in cleartrip, I got error while the portal redirected to CRCTC. No further info appeared regarding of the reservation comfirmatiin and failure. also not notification reached me at the time. I thought it was failed and as there were only two positions left so i had to book as soon as possible again. the second trip was booked successfully. then in the morning i found that i had two trip in the same train, for the same passagers.
How could this happen that the portal failed and the booking successed? how could this happed that no notification was sent if the booking was comfirmed at the time? how could this happen that the same passagers could book the same train on the same day? how could this happen that I have to pay the bill because of this stupid system(including CRCTC and cleartrip). cleartrip has responsibility of preventing from this kind of no logic event.
I was told that the ticket was tatkal and couldnt get refund only because that CRCTC took the money. Cleartrip should think their responsibility and minimize customer loss. There are huge space for the improvement in your part.