Cleartrip — promotional code entered was not applied at the time of booking airline ticket

Address:

Pune, Maharashtra, 411007

Ref trip id :[protected]
I booked my ticket online on 22nd june on cleartrip after getting to know that i could avail rs 1800/- cash back on international ticket. However the promotional code festive which is valid till june 30 did not get applied. I typed the code, there was no error reported on screen. I called customer care immediately and reported the problem. I was told that the case has been passed to the tech team. I again called on 25th and i got the same reply that the technical team is looking into it. I called again today and once again the same reply. If the system did not accept the code or report any error, why should be at a loss?? Request for a favourable response - thankyou!