Vastu Vihar — filthy behaviour of project manager and unskilled engineers and technicians

I have booked a jayanti duplex in vaastu vihar adityapur no j16 phase 2.
Work is never done on time but phone call regarding payment always beforehand. The behaviour of mr. Prabhat is absolutely ridiculous and extremely unprofesional. My home design is being altered with as the backside boundary wall is not straight but narrowing such that there is no space left 0f 2.5 ft for half the wall. And when this matter was put to mr. Prabhat he told me to get the house destroy completely and to build again in a threatening tone.
There are many non permissible constructions going around in vaastu vihar adityapur as simplex are made into 3storey buildings while biased behaviour is towards person going by the rule. I have done extra construction in my home with due rule and permission but yesterday all of a sudden my work was being stopped with condition to be let off only after handover. This arm twisting will not work with me and if this is happening with you knowing then i am totally disappointed with the brand name that vaastu vihar created.
I kindly request you to look into the matter and take some stern action against mr. Prabhat otherwise i have other legal options to pursue.
Thanks
Jitendra kumar deo
Jayanti 16 phase 2
P. S.- there was and always will be problem in construction line but that can be solved amicably but not with this behaviour.