Airtel — I'm complaining about the slow 4g internet connection

Worst internet speed as well as 4g is concern. Some times the internet speed is 3 mb/s and most of the time 122b/s. Airtel if you are providing 4g so please be true to your words.in advertisements you exaggerate the things but reality is worst than i thought. I have recently bought your 4g dongle just for downloading movies and the performance of the dongle is more than worst. It's my humble request to please fix this.