Airtel — data card billing which was not issued to ,me

Address:

Belgaum, Karnataka, 590019

I visited the airtel store belgaum to get post paid data on that day they initially issued me data card no. [protected] but this number was not activating that day due to some problem, so airtel staff has asked me to return the same and instead of that they have issued me new data card no. [protected] and this number was activated and i used it for two months and paid the bill also in time, but now airtel customer care is calling me to pay the bill of the data card which was taken back i. E [protected] which i have never used.

Kindly resolve the problem at the earliest