Jio — poor internet connectivity

I complaint jio team via email 2months ago regarding poor internet connectivity in my area.
The internet connectivity is so poor that you can't even view youtube videos in more than 360p and if you have to download something from play store like of 30mb file it will take 5minutes.
It's not issue with me but in my home i have 3jio numbers and all in different model experiencing same problem in every device.
I am doubtful why the sim operator is thinking of 5g when they can't provide 4g in a best manner.
Please improve my area internet connectivity i have complaint you via email - anupsharma. [protected]@gmail.com
Browsing through my complaint you can get through all area details