Runwal Group — cl04-a1 - unfair dealings at runwal group

I am very disappointed with the experience i have had with this group so far. Being a customer for 2 years+ now i am informed that there r drastic changes to the original plan for which i have paid a premium price already (Floor rise + terrace) and terrace is not in d plan right now but still i am expected to pay d same price without an increase in flat area. I discussed this with crm team n she said the final layout is not yet ready. While we r waiting for d final plan n discussion with her she sent a demand letter with gst. This d cost we have to pay for being associated with a big name. New customers do not have to pay floor rise/ stamp duty gst n these charges r being imposed on old customers. Was it our fault that there were delays in getting necessary approvals?? While booking we were told the registration will be done in 4/6 months.
A request to all old customers who r facing similar issues, let's unite n fight this exploitation