[Resolved]  Airtel — GPRS not working while roaming.

I am a regular customer of Airtel from Haldia, West Bengal from last 4 years. I normally use GPRS facility of Airtel. From last 6 times, whenever I move outside my home state I am unable to use the GPRS service. i made regular complaints but there is no response. Rather, once a fake sms that my problem is resolved was sent by customer support.
I am still in roaming and not able to use the service.
Whenever i connect I get message that.. "Max. connection in use please close some and then connect"