Looks like the builder is running out of MONEY and trying to find innovative ways to get more Money from Owners.
First of all they stopped paying pre-EMI to owners who bought flat using the pre-EMI scheme for past 1 year.
Second after 3-4 years they are now asking Owners to pay interest on all the delayed payments which happened over last 3-4 years. Also the interest calculations is per what they decide in their letter and not as per the agreement documentation.
Third no replies to any emails/phone calls on deaf ears.
Any other owners in same boat please contact as I would like to know what steps you are taking .