Airtel — no coverage at all to newly port number & mis selling of plan

Address:

Pune, Maharashtra, 411045

Hi, i ported my number [protected] from vodafone to airtel when airtel approached me mentioned 25 gb data for each month & excellent network.
Now 100% calls are getting dropped & coverage is very poor.
Customer number is [protected]
Cell number - [protected]

I was promised of 25 gb data each month & in invoicing i can find only 1 gb data is given & i have been charged for all extra usage.

I dont think airtel cares about customer but can someone look into this?
Regards
Mandar