as far as i know Airtel no more has 128Kbps plans all customers were migrated to UL 750 Rs/- (256Kbps) on request ,128Kbps plans doesnt exist in Tamil Nadu and Karnataka , i did have 128Kbps UL @ 750 Rs/- i called up the CC long back and upgraded to 256 this was when i was in Bangalore ,i moved to chennani applies for a airtel connection by default i got the 256Kbps @ 750Rs/- UL.