This is reddit for God sake. If a business chooses blatantly to disrespect you, why choose to respect them? If we want things to get better we need to shed the fear of big corps. Now i could be absolutely wrong but as far as I'm aware, no one from reddit has been sued in a defamation case from this forum.
Also to note, defamation is an extreme for a business. They actually have to prove what you said alone caused an issue with revenue and so on. 1 post on a random forum is just not enough.
With that being said, shed the fear, post your business.
(HCL and USAA can suck a lemon)