The cancellation is possible. But the mode of cancellation depends on the terms and conditions that were mentioned in the contract. So before asking for cancellation, you should thoroughly go through the deed and decide on the methodology. What are the responsibilities of the buyer's side and what are the responsibilities from the seller's side? These are to be thoroughly read. If the buyer is violating any clause that is accepted in the agreement, you can highlight that and you can go for cancellation, We have to see the deed of the agreement and then take a decision. I suggest you go and contact the best advocate in your area with all the documents and tell him about your intentions. He will go through the complete documents and he will proceed further and help you in doing the cancellation without ending up with a problem. Please go to a known advocate.