Landlord not returning lease amount

Hi I am from chennai i was looking for lease house for 6 lacks and same has been found in ambattur self n husband approched the owner and she finalized for 6 lack.. she asked to pay 2 lack rupees as an advance payment to hold the property for us.. We have done transaction through NEFT on dec 11 2020 we said that will be relocating to the house on Jan 15 2021 but she denied saying that current tenant is out of station.. Again we approched for Jan 21 2021 but then again she denied to hand over the keys.. Again and again she denied to give house till feb 10 2021 said the current tenant wife is pregnant so they will not be able to vaccate home as per hindu rituals... So we have asked her to repay our money... After so many follow up through calls n msgs finally she paid 175000 .. Remaining 25k need to pay by her.. She blocked my husband's no and she didn't even responding to my call nor to msgs.. Finally she said that she can't repay my money she said do wt so ever u want.. So we went to the property area directly and spoke to the current tenant..they said that they have no such concern about this nor the tenant s wife is pregnant She given many fake commitments to us mentally she is torturing us.. We went to police station but even police said that civil case cannot be handle by police... Wt to do further plz anyone can assist me... As already we r in huge loss because of covid 19...plz suggests me wt to do