Airtel — female representative called and used very rough language and given threat to me

Address:

East Singhbhum, Jharkhand

Dear sir,

One female called me and given threat and used very hard language. I request you to dismiss her and take hard action against her. I am very old customer of airtel but never recieved such type of experience.

My mobile due is there but there is demand criteria which should follow by company. Recieived call from number - [protected] on saturday.

Please let me know the action taken against her. I will not keep quite if action not taken against her.