Airtel — prepaid mobile internet

The internet is bloody slow. Literally goes down to 500 bytes per second. Bytes per second. I get much faster 2g internet speed on #ing bsnl.
And this only happens when i'm trying to download or upload files. When i'm not using any internet hungry apps, the speed spikes up to 200 kbps.
This is affecting my work very very adversely. Such # service. # all network. I swear if i lose a job it's because of this stupid #ing network.