Ibwas using the 4G internet with Hotspot. Most if the time I recharge the data for 2gb 3 out of 5 times the data gets exhausted in just about few days even though I hardly use it. When mailed Airtel customer service they replied according to them it got exhausted by using.
Though I am very certain of my usage surfing 3 days of web pages without downloading. Very poor response, no proper service.