Airtel — excess bill amount in previous two months

Sir/mam,
Through this letter i would loke to make a request to you to check my bill prepared in previous two months.

My previous two bill (I. E. Of october and september) are charged too much (I. E. My bill is too much). Bill amount is much larger than it should be and there are certain mistakes in it. Please check my bill.

I hope you will look into my problem and will reply soon.