Airtel — irregularity in bills

Dear sir,
My son was using airtel postpaid number [protected]. Presently, he is in usa for his higher studies. Before leaving, he has closed the connection in the first week of august with written request at your office in ranjeet avenue, amritsar. This closure was confirmed immediately. He informed me that his airtel bill is still coming.

You are requested to check from your side no call was made from this number w. E. F. August 9, 2018.

I am also using airtel number [protected] and have full faith in your services.

Please help us in this regard.

With regards.

(Dr. S. S. Malik)
Father of saurabh malik
T. I. F. R.
Old navy nagar
Colaba
Mumbai-400005