Arun Dev Builders Ltd — builder

Booked a 100 sq yds plot in arun dev builder haridwar utranchal project 30/6/2006. I have paid 296300 @ 90 % payment as per their demand through cheque till 29/01/2011. My registration no with builder was 4775. And alotted
Plot no c-291. After this builder is not responding & even not picking phone.
I want my refund. The builder project code is hrd-p[protected].