Gulshan Homz Private Limited - Unexpected Interest Charges

I own a flat in Gulshan Bellina Phase* and with the final demand, I also received unexpected interest charges.

When asked for the clarification with all the payment updates in email, there were different amount I was asked to pay on a daily basis. They don't even bother to read emails and response in a professional manner. I did have conversation with few of them were really very understanding, but just because few of them doesn't really care about what customer is trying to explain makes things even worst.

What looks like to me after seeing different amount on a daily basis that they have set some amount for all the customers that they are going to charge and then whatever they can grab from the customer they will, all they care about just money and not the time and adjustment done by the customer during this tough time.

Any delay from Builder's end is due to pandemic situation but any delay from customer end that too of few days will be chargeable. Request you to kindly look into this matter as I'm seeing Best choice of choosing Gulshan Homz becoming my worst choice.