Why? If you had such a bad relationship with a company, why use them and why being such a fan? I genuinely don't understand, if I had an interaction like this, I would never recommend them.
Aside from the refusal to explain why I cannot accept payments, I haven't had any negative interaction with the company. They just seem unable to provide any further information, for either legal or policy reasons.
Other than that, Mrs. Lincoln, how did you enjoy the play?
I agree with the GP poster, I'm at a loss to comprehend why you continue to "enable" companies like this to continue bad business practices.