Godrej Properties — Unethical demand of interest for late payment

Hello Godrej Air,

I have purchased a 3bhk flat in godrej air gurgaon in 2020. Today I got a mail from Pernika Sharma from Godrej Air that I have to pay interest on late payments. All the details mentioned were showing late payments in April 2020 and May 2020 during covid times. My question here is - when the builder has taken extension of 1 to 2 years for COViD reasons then why are they charging interest from customers in the same COVID situation. Also, 3 of the payments had invoice date of 3th Dec2020 and payment date of 06th Dec 2020 . Could you please explain how can person get the first disbursement of loan done in 2-3 days. Can you please revert me why only 3 days were given to pay almost 30 lakhs.

Regards,
Anupam Gupta