Airtel — call messages

Address:

Prakasam, Andhra Pradesh, 523001

Hi i am using unlimited calls plan of rs.399. i have been receiving messages from A$-TFAROT containing call details such as call duration call cost etc., of last call that i have not made. this is bothering me a lot. i feel that something wrong is happening with my number. please see in the matter and take some action. i have been trying to call the customer care but i couldnt talk to the customer care executive. please resolve my problem