Need some help to get my refund

You issue a legal notice to the seller to either comply with the original documents that are required by the bank to sanction home loan  and if not possible then  to cancel the sale agreement and return the advance amount with interest from the date of payment till the date of settlement failing which you can inform that you will proceed legally against the seller for which he will be held liable for the legal consequences

"BUYER BEWARE" must have applied particularly about marketability of title before making advance payment.

However, issue legal notice to seller to oblige with requirements made by Banker.

What do you mean by "Was not informed that the property was bought using a General POA by seller’s father."

Thank you so much for your clear advice, Sir. As a first-generation buyer handling this alone, your guidance means a lot to me.