Delhi Development Authority [DDA] — rebuild o[censored]nauthorized construction

Address: 110057

I am resident of basant goan here are few people's which captured a government land and build their house, no dda official's take any action against them they are also capturing road side area also near their house (H. No-147).
I have question which are as under.
1. Damolation is done in 2004 on outside of lal dora dda land but the house is re-build.
2. If at the time of damolation they were right why they are damolise or who are the offical's to help them to re-build, because they are already damage.
3. Need necessary to remove because they capturing the road side area it's difficult to pass their.