Nestaway Technologies — Renting of house

I signed an agreement with nestaway on may 2019 for one year.
This agreement does not contain any mention of painting charges to be levied on move out,
The rent is 13700 as per the agreement.

I have not signed any new agreement with them and have requested them that i am mving out.
When i put in the request i could clearly see that no painting charges were going to be levied only the charges for repairs if any.

Now just a week before the scheduled move they have included a painting charge of 9000rs which is not fair also they have been taking 14700 as rent from me without any signed new agreement mmentioning the increase in rent.

They do not have a working customer care number also they have no option to raise complaint through their website.