That's unfortunate, and I understand your hesitancy to trust.
I placed a first-time order with a different supplier [i.e., not MoreBeer] whom I had hoped to make my primary supplier, and they shorted me a couple of pounds of Munich Malt. I contacted them immediately, showed them a photo of the postage label (which had shipping weight on it, to verify it was a few pounds less than my total order should've been) and they took my credit card number to reverse [credit] it but it never came back.
They did offer me a sizable discount on my next order, but I haven't gone back to them.
It was just a couple of dollars, and I know they are supplier used/trusted by a few on here, but the fact that after various emails back & forth over the subsequent weeks and the credit NEVER showed up made me annoyed that I had given my credit card # to them a second time for no reason at all.
It shouldn't be a big deal over a couple of dollars, but the fact they never made it right (despite getting my card # AGAIN, for the reversal!) makes me hesitant to do business with them again. I really wanted to like them too.
I won't mention who this supplier is, because I may still give them a second chance.
I've had good experiences with MoreBeer, it sucks that you didn't. But I understand how you feel.