Airtel Prepaid — no incoming std calls

Airtel Prepaid — problem on std calls

Sir,
Good mornning,
I am Abhay Dubey, using airtel preepaid sim card for one&half year, but last one or two month i am facing lots of problem on std calls i was complend lots of time in coustmercare but they are not serious on my complen they alway be give me a time period but this type of problems are not disolving by them.
when i reach at airtell outlets they are not leation my complens. That situatation is painfull for me.
Due to this problem i am losting lots of importent calls, & money also who will bear this loss, iam not able to bear this type of problem.
So compney give me which is faced by me and my company.
Last complen no is[protected] on 26/07/09
Thanx
Abhay Dubey
+91-[protected]

know to my no.[protected] calling details