I am only doing my advocatus diaboli act here, but...
Perhaps they were peeved that within 24 hours of placing your order, you were already complaining on Amiga.org? If I was a retailer, I wouldn't want my name dragged through the mud on an Amiga forum, seemingly unjustly...
Just my thr'pence
edit: To further add to this, I vaguely remember someone started complaining on here about Amigakit. It was sorted it out very satisfactorily and amicably and was just a misunderstanding or something. I remember that in that case I thought it was a little bit out of order to start airing grievances before the company had an opportunity to do something about it. It's someone trying to run a business and earn a crust at the end of the day...