Incomplete information regarding charges & information about apartment by the agent.

Can I get advice regarding the agent for renting a flat at ₹18,000 - ₹20,000 per month & Deposit as ₹50,000 before telling that the amount you have to pay now is ₹18,000 for ₹10,000 as deposit & ₹8,000 as concesation but to get clear idea after payment he told that ₹10,000 is token & ₹8,000 is concesation. And you will have to pay ₹50,000 as deposit after that also, instead of ₹40,000. He showed the flat & told that you have to pay ₹20,000 rent per month after 2 Months as till then lift & parking is allowed to you & good water supply also. Currently they are told to provide water for an hour only as the apartment is under-construction & it is going to be completed. But we came to know that it will take 1-1.5 years to get it done. Till then we can't stay there due to the noise of construction & safety purposes also, as we are MBBS students & I have anxiety also. So, I can't tolerate it for a year. Any solution to get a part of ₹18,000 as refund. Agreement is not done yet & also I don't want to do it. Payment date:- 9th September & last agreement date is 30 Agust. We have just payment proof as online & Aadhaar card of the agent & Mo.No also. Any solution?