Harassed by tenant

I hv a flat in pune..i hv posted an ad online for the same & a tenant approached me thru same mode he agreed on t&c but insisted me to let him enter in the society as his luggages were on packers movers vehicle..i asked him to wait till agreement done but he requested me a lot so i let him enter there after getting one month rent & security deposit.. when drafting of agreement got prepared i requested him to sign it but he made excuses for one or another things & delayed it intentionally..he became rude in his behaviour & after 10 days he told me that he will vacate the house in a week..my son mailed him that if he wanna vacate then go ahead but after one week he will be charged a fine..then he called me & started shouting on me & forced me to give him a month so i agreed on that & gave him a month to vacate...after 8 days he called me again & told me that he is going to vacate flat 2morrow & his all amount must be refunded by calculating rent on pro rata basis by 2mrw only...he called me in the flat i went over there with my mrs we both are 65+ & my son lives in other state...when we reached there he brought 2 more people then he & his wife asked for refund of all the amt ..i told him that rent of one month since u informed for the vacating the flat will be deducted from the deposit & the cost of society reg & agreement wont be refunded as per agreement..then they started shouting that rent on pro rata basis only be calculated else they wont hand over the keys..she got the flat smwhere else so she had already removed her luggages..she started shouting & making unusual noises & insulted me a lot i got fainted while talking becoz of stress as i had high bp issues too..then she also started crying shouting & making false allegation in front of his husband & all that sm1 is harassing her & beating her..i told her mediator to stop this all as it l create nuissance in society but they forced me to accept der proposal of refunding all & rent on prorata basis..now under such circumstances what option left with me as a owner (senior citizen).....