How can the property buyer respond to a case by the seller due to the agent breach?

Hi,

I have a concern. We have signed a contract with a seller, but it's not an F contract. We signed an MOU, which is an A contract, and the seller has signed the same, which is a B (this comes from the real estate agency).

The seller has specified the date of transfer and confirmed his availability to the agent, but the agent didn't inform us as a buyer.

The seller raised a complaint in RERA mentioning that the buyer didn't show up to sign the NOC, knowing we, as a buyer, had sent many emails to the agent as follow-ups.

However, it was ending up with the same answer from the agent that the seller was not answering his calls and he did not confirm the date to sign the NOC.

We went to RERA, and they asked us to solve the issue between us. Now we are waiting for the seller to see if he would like to proceed with the sale.

My question is, as a buyer, how to protect ourselves as we have given a deposit cheque to the agent and paid for the conveyance fees and valuation?

What is the next step from our side?