I tried to buy a bike part from laxzo.com.
I found what I wanted, at a cost of £12.34, put it in my "basket", went to the checkout. And it wanted to bill me for £24.68. And no, I didn't have two of the item.
I tried it again - same result.
So I bought the thing from another vendor. But then I thought, maybe they don't know about this problem, so I emailed them at firstname.lastname@example.org.
I just got a reply. The reply is a blank email.
They give a freephone number on the site. Freephone:0800 That isn't going to work!
They also give a snail mail address, but I'm not so sympathetic and expectant
of action that I'm about to write them a letter.