One of my main frustrations though was that this was a very highly regarded YC company. Should consumers expect this disrespectful behavior to be accepted from other YC companies as well?

Should YC founders be expected to be able to simply pick and choose which customers they want to arbitrarily delete?

I can completely understand if this was a fly by night operation. But YC is basically the Harvard of startups and this was completely out of left field for me.