unable to use internet using bsnl in mumbai...please help

Messages
3
Location
thane
ISP
bsnl
I am unable to use internet properly using bsnl sim in mumbai, my sim is from maharashtra circle and i have recharged with data plan. I am using lumia 710 and my roming option is ON. bsnl customer is so worst no one solving problem. Call disconnects automatically when calling on 1503. Internet works fine in pune but as i enter in dolphin network problem occurs. Plese help.
 
9869012345. Call Dolphin.
 

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