I seek to cancel a purchased property and get refund for delay in handover

Dear Advocate Sweta Singh,

I am from India and in Sep 2018, I purchased an apartment in a hotel. The hotel has not been completed and the delay is more than a year.

They have not paid any compensation as per the contract, nor do they talk about it. I have paid more than 80% in installments and paying it regularly.

Please help me, guide me on how to cancel the deal and get a full refund, or any other way which helps me recover my investment.

Regards