Related to buy of property

Dear sir, I booked a plot in Mohali district and given amount of 70% of total value. Sudden, the thing came in notice that the registry in that area put on hold due to unapproved colony by GAMADA, Punjab. What will be the next I don't know. Builder is telling that there is no legal issue and property registration will open soon. What time it will take reopen if it falls under unapproved colony. In other hand, how can I take my money back. Pls advise. Thanks