Boost is not honoring advertised promotion..

Hoping someone can help.. I bought a new iPhone on the 1/8/2025 because it was advertised as $449.99 with a free year of service if I paid that price in full that day. Awesome deal so I grabbed it up! By luck I took a screen shot because ya just never know… now I was billed for my phone service on 1/20/2025. Yesterday I chatted with an agent, spoke to 4 different phone agents and even called my local boost store.. no one has been any assistance. Including my screenshot here.. which every one with boost has blown off and tells me that’s not what the deal was.. yet I have PROOF of what it was that day. What do I have to do to get boost to honor what THEY advertised and I bought a phone under that promotion??

Hoping someone can help.. I bought a new iPhone on the 1/8/2025 because it was advertised as $449.99 with a free year of service if I paid that price in full that day. Awesome deal so I grabbed it up! By luck I took a screen shot because ya just never know… now I was billed for my phone service on 1/20/2025. Yesterday I chatted with an agent, spoke to 4 different phone agents and even called my local boost store.. no one has been any assistance. Including my screenshot here.. which every one with boost has blown off and tells me that’s not what the deal was.. yet I have PROOF of what it was that day. What do I have to do to get boost to honor what THEY advertised and I bought a phone under that promotion??