Airtel — Wrong statement generated

Address:	D.no. 26/12/924, Annagunta colony, B.V.nagar,nellore
Website:	airtel.com

I'm using airtel postpiad since one year always i pay my bills after checking the generated bills carefully by knowing my usuage and limit of the given service on MAY26th i got a fresh bill with statement with add on charges and GST i haven't used any add on service last month but the bill generated with a wrong statement how can i pay without explanations im strictly complaining this issue to consumer portal to interrogate