About ready to leave after 22 years

I've been a member of AT&T Wireless since the Craig McCaw days, I've seen you all through the pains of Seibel, and other systems, helped Janet Kerns get enterprise security deployed. I feel like we just got the "royal upsell" from one of your retention specialists during a recent account review, where we really didn't need everything we got, and some stuff we got, we didn't even get! Well one of the things we got was a military discount as I'm a USAF Vet. Only problem is I've tried every which way to upload my documents, but I can't. Two different computers, different browsers (even private mode as I was told), with and without a VPN. I need an email address to send these documents to, but can't find one. The link I've been sent (two times now) just doesn't work. I've tried a .jpg and a .png, both of the correct size and format. It's worth a good discount, so I don't want to lose this. If I can't sort it out, I'm sure a competitor will. My consultants and I helped put this network together, so I have a fierce loyalty to it, but that only goes so far..... Please help.