I have never dealt with "virtually all companies" BUT I have dealt with many companies, and nearly all of them will bust their hump to correct any errors. I have ordered from Hobby-Lobby on several occasions, and only ONCE was there any discrepancy between what I had specified and what I was charged. It took exactly ONE E-mail to the company and the excess charge was cheerfully and promptly refunded.
IF a company is screwing over their customers, AND they refuse to attempt to correct the problem THEN post a message here bitching about it
summarily condemning any company on the basis of one error shows a certain lack of maturity.
Summarily condemning ALL companies WITHOUT having even dealt with them indicates a DEFINITE lack of maturity