the problem is with your downstream attenuation..
It seems that you are located at least >4km away from your exchange.
the max value you shud have is around 45-50dB..
Thats the reason why you are getting low download speed..
which plan are you on? If ur on HOME 500 then its a waste of money since U wont be able to get 2Mbps on ur line.
Im using the UL750+ plan and am from Pune. Usually the upload speed is more than download for me..
What you are getting is way too less (70kbps!), so i suggest you complain to your exchange.
here is my speed test result. UL>DL for me
And i dont see anything wrong with your router config..
