Volkswagen India — Non-delivery of car

Address:

Darjeeling, West Bengal

I am from bhutan. I had booked a polo gt with "essenn automotive pvt. Ltd" siliguri, west bengal. I made an advance payment of rs. 100, 000/- on the 6th of jan 2016. The dealer gave me 30 days delivery time and later changed it to 45 days. Today, 12th april ( after more than 90 days), when i called them, they are asking me to take my money back because they are not able to supply my car. If that be the case, why did they not say that in the beginning, i could have opted for another car. I sold my old car keeping their delivery date in mind. I've been posting my complaints on vw facebook page and have even written to the company in germany, all in vain. I regret having so much faith in this company. Please help.
Ugyen tenzin.
Bhutan