Airtel is fooling its customers. by dialing the number *124# it displays the whether there is any tariff voucher activated on the number and also its validity but along with the same it also displays dat if a customer recharges its number with the same voucher before its expiry the customer can carry forward the remaining validity. i did the same but i didn't get the remaining validity and when i called up their customer care they started giving me all foolish explanations and none of the its customer care representative were polite and instead they started giving me english lessons and started explaining me the meaning of the same sentence.a company like airtel shudnt be doing something like this... i mean are they only bothered about expanding their customer base or they should also be looking into their problems and try solving it. i hope the number portability system is launched ASAP then only these companies will come to know what to expect from customers whom they have been harassing for quite some time.