I have Aircel sim from 1.5 year and now I just face problem. Very bad network here in west Bengal, Howrah. Network droping almost 8 to 10 times in a day. Dont know why am I using it buy due to cheaper price of internet packs I am still stricking to it. Some times its download speed is very good. But maximum time its very bad.
Please do improve your network, I am quite due to all this. Have a look to this issue and resolve it as soon as possible.