By not making the follow-up call, you tarnish your personal reputation and the reputation of your company. You are an Ambassador for your brand when you network.
If it’s the first time someone has met you, or a representative of your company, then everything you say, how you say it, how you act, how you react and everything you do, sets their perception. We try so hard to create a positive first impression that it’s criminal to let yourself down at the first turn. Both yourself and your company will be judged on your behaviour. Don’t ruin it by your actions… or lack of them
That’s bad for business!