Ok bro then i think ur application is not succesffuly went to axis.
The application number provided in airtel app is waste bro , no use of tracking using that , once you apply within 3 working days if the card is approved you will get notified in airtel app itself as i have recently applied and i am able to view the tracking in 5 Th day itself.
S you can raise a complaint with RBI in this case.