I think the thread title is extremely misleading and unwarranted. I have looked around on a few other websites. I haven't noticed any stating no cable supplied, and Amazon has a few comments warning there's no cable. Most sites are more expensive as well.

Their website could have stated that a cable was not included, but you could also have checked that a cable was included. As the Motorola isn't supplied with one, the company supplied exactly what was ordered. There is no reason for such outrage.

You could either take up the offer of one supplied post-free (which means you will not be out of pocket on postage, and in exactly the position you would have been in, had you ordered one at the same time as the scanner), or you can choose to buy one elsewhere. I would not expect one for free, if I had made the mistake you made. I don't actually think it would make good business sense for them to give one for free either; there's a time for extreme generosity, and a time to try to settle the matter. This is a time for the latter.