Airtel — net not working properly

Address:

East Singhbhum, Jharkhand

I have airtel sim and i have recharged with rs 148 pack for unlimited call and internet.
But unfortunately internet is not working well, always having problem while surfing, internet is working very slow and sometimes not working. Some times showing e symbol only never surfing with good speed.
Sometimes calling problem also.
Please resolve it.
My phone number is [protected]