Omaxe Limited — Interest payment for delay in delivery Of Club Facilities

I have purchased a flat from Omaxe limited in their Sonepat project. The company has charged me interest for minor delayes in payment such as 2-3 days. The company now has delayed the delivery of Club for which they have already collected construction charges. I need interst on the money paid for club charges and also a final deliver date of the functional Club.I have filed a written complaint but there has been no reaction from any official. There are no details of how to address this issue despite multiple follow up with their customer care Regards Sushil