Airtel — slow 4g internet and call drop

Dear sir,

I'm getting # speed from your 4g internet, that too in a metropolitan city like chennai. I'm i not stuffing enough money in your mouth that i'm unable to get speed?
The second issue is call dropping, where when i try to call a person all the lines come as busy. If you don't have enough connectivity, stop giving new connection to new customers. The call quality is very low, where most of the time i've to scream at people, so they can hear me.