Very, very very shady company

Very, very very shady company
After placing a $370 order on the website of this company, I was contacted by a customer service representative to be told that they could not verify my billing address. Do what?! The credit card that I used is a Capital One Mastercard Elite with a lot of digits in its limit. Not longer after the same CSR called me and I confirmed that all the information they had on file was both legit and accurate, but 6 hours later I received another email to be told that they still cannot process my transaction.
Because I am a friendly and helpful person I sent them a screenshot of my bank account (showing that Capital One had already processed the payment) and asked the CSR to speak with someone else, who is more knowledgeable about these kind of transactions (I have 10 years of corporate banking and 5 years of data privacy/ fraud detection/ IT security experience) and here comes the second surprise: I was "invited" to pay through PayPal. Do what Again?! At least I was not asked to pay through Western Union to a Nigerian prince. But how about me speaking with another person in the company? Well, that was another roadblock because apparently there's no one else in the entire "company" willing to have a conversation and review documentation.
Needless to say that I would rather shop anywhere else. Like I said, I work in data privacy and internet security and these are HUGE red flags. Good luck getting a lifetime warranty from such a company and hoping that the "high end" products that they sell are legitimate.