Right. So, they just said you needed the wrong size. I imagine if they suggested sizing to all their customers without asking pertaining sizing questions, they’d get it wrong more often.
Look in the mirror. Unless you are weirdly proportioned, they ask certain questions to try and get you setup. Based on the INFO you have them. It’s not a 100% process of inseam and torso length fits everyone. So, I’m not doubting your story. But, I’ve bought and still own several Kifaru pack frames. So, they ain’t just winging it.
Go get your pack nailed off so you can get the one you want.