If you are in sales it makes sense to stay in touch with all your sales contacts and keep doors open. If you blow smoke, lack integrity, pitch too hard then you are liable to piss off your prospect and potential customer and end up losing in the future any sale you might have had.

Some sales people will feel once someone says NO that that is a forever thing. Often as an owner of a company when I said NO, it was a forever situation, yet I always kept the brochures, sales information and filed it away somewhere.

In fact most companies do file sales information from various companies and this is something that makes sense. Make sure that your sales information is kept and make certain that you leave the door open and do not let it get slammed in your face with the