Flesh out the real concern he has and answer it. Then pose another closing question. He is just stalling you. Flesh out the real concern he has and answer it, then pose another closing question. But always professional.
Success comes to the tenacious.
The sale may take multiple calls and multiple closing attempts. Often, salespeople give up too early after hearing the first no thank you. You have not heard a real no until you have heard it seven times in the same closing scenario. Ask why and keeping asking why until you have fleshed out all the customer s objections, concerns, and fears. This is where the real selling begins.