Nestaway Technologies — exorbitant sums added to bill

I have been staying in this place from nearly 2 years.

When we went to make payment we noticed that there a lot of fines mentioned when i have paid the rent on time. Also there was no explanation on what exactly is the reason and we could not reach any of the nestaway representatives to check on this.
Also there are random amounts added as fine. How is it?
Policy says nestaway charges a late payment fee of inr 100/day if any amount is not paid by the due date. This amount is charged upto the date of payment.

But our bill shows 300- 600 added every day.
How can some company charge exorbitant amount of money from the tenants.
Last month is was showing the due as 2491.46 but now it has suddenly jumped to 5216.41. Is it that the fines have got added??? It shows as like we are supposed to pay extra amount. Of almost 13000. How can this be acceptable?
If fines are being levied why no one contacted us to inform the nature of the services and for what reason they are added the charges before starting this? And no one responds to our queries.
Even when we raise a complain there was no action taken and there was not correct response from the customer care. Whenever we raise a service request no one takes it up and not action is taken and then we get a bill added to our account saying that they visited etc.
Also when we reach out to any one from they are not ready to give any explanation for the money added to our bill. Why should we pay without any valid reason.
We are try to move out from 2 months and still no response.