Airtel Digital TV — Not received rs. 250 recharge as per trip advisor offer

Address:

Anand, Gujarat

My Airtel Digital tv Customer Id is [protected]. As per above there was an offer from trip advisor site to review 3 hotels and we will get Rs. 250 recharge within 21 working days. I reviewed 3 hotels as per the offer before closing date i.e 20 th May. The offer closed on 20th May 2010 and since then it has been a month and haven't received any recharge or intimation from either airtel or trip advisor. I complained on airtel customer care many times but was in vain.
Are they cheating, is this fake??
Waiting for a positive reply
THANK YOU