Oh man I just thought to open a thread regarding Lankabell 4 G. My problem is a bit similar to you. Time to time getting, disconnecting and reconnecting. A couple of weeks back I spoke to them over the phone regarding this issue. They said they will attend to this issue and gave me a reference no. But I did not get any single call from them until last week. After that, I put a complaint. I still did not get any phone call from them. Actually, I can't move for a different ISP provider because I 'm using an unlimited connection. I'm paying Rs 6300 per month for a 2 Mbps line.