I have been using ABC Broadband for almost a year and it has only let me down two times .The speed of the connection is great and the packages they offer are also good though expensive than mtnl. The connection works perfectly fine but when its down it goes down for about a week at least .
The customer support also don’t respond fast and send someone to look at it its like you have to wait for 5 days to get a positive response.Their email support is better than calling them . So if u are looking for a good connection I would say go for it. I have the package adbb849 which gives 2 Mbps speed for 9gb then 750 Kbps thereafter.