"service" people -- feh

I recently heard a good review about an online optical shop, a place for buying prescription eyeglasses over the internet. The price is so low that it rivals "cheaters" -- the magnifiers you buy at the drug store. So after I left my glasses at home again and had to wear an old pair at work all day one day this week, I thought it might be worthwhile to order a pair and see how well they work.

I selected a decent-looking frame (purple, of course), and took out my scrip from my last eye exam so I could fill out the online form. I got to a measurement not even listed on the scrip and saw that it is mandatory for the online experience. I read the online explanation of the measurement and was a little surprised by how firm they were. Then I found out why.

I called the optical shop where I've been getting glasses for years. No answer. I called the front desk. They promised that someone would return my call. The call came back fairly quickly. I asked for the measurement.
She: You have to come in.
Me: I've been buying my glasses at your shop for years and I know you have the measurement.
She: It might have changed.
Me: I've read that it doesn't change.
She: Well, you'd have to buy your glasses here.
Me: I've been doing that for years. I know you have it in your records.
She: I'd have to get management permission to give you that information.
Me: You are federally mandated to give it to me.
She: We can't be responsible if you buy your glasses somewhere else and they don't fit.
Me: I understand. You can only be responsible if I buy my glasses at your shop.
She: Oh, ok, the number is 53.

Sheesh. First she pretended not to know that I was a long-standing customer there, then she acted like she couldn't help me. And this is supposed to *encourage* me to be a repeat client?