Guidance needed

Aoa have a noob question, so we buying a car thats financed by my brother’s company, company is giving us 20 lakh to purchase the car.

We have decided to buy a car for 27 lakh by putting 7 lakh from our own pocket.

Anyways we finalized the car and gave token , the seller came to the company, the file was OK , the car will be transferred to company name, the seller insist that transfer is must and I’ll get the transfer done ,

Now my question is , how do we play it? What if the company transfer 20 and we pay 7 and the seller never show up to excise office (company man will go with him) , how would we pay him 20 and tell him to come to excise with the file and give him remaining 7 , how will you guys play?

Sorry for the noob question though.