FL Apple refusing to honor tax exempt certificate

Apple store refusing to honor my tax exempt certificate for teacher discount. Apple website tells me best my school can do is the $200 discount on new mac pro, and now store says they will refuse to honor the tax exemption... unless I pay more than what the site tells me I am entitled to as a teacher.

I checked Florida law, and the Florida Administrative Code says I have the legal right to purchase without tax by supplying that certificate and paying with funds that show the organization name. NOWHERE does it grant them the right to choose whether or not to honor the statute.

1) I am a teacher, and their website says I can purchase at the education pricing.

2) They tell me I can purchase at the education pricing... right up until I present the tax-free certificate.

3) Florida administrative code says I have the legal right to purchase anything without tax for the school's consumption by presenting the tax certificate and paying with funds connected to the school. NOWHERE does the statute grant them the ability to choose whether or not to honor the certificate. It is my right as the representative of a non-profit.

3) They are telling me they can process the exemption... but they are telling me I need to choose between the education discount and the exemption.... as if the tax exemption is a favor they're doing me rather than their obligation under the law. They even called it a "discount." It's not.

Telling me they will allow me to purchase the same item, but charge me more for it in order to honor the tax-exemption is clearly illegal.

How do I get this resolved without having to involve a lawyer?

<Edited by Host>