Anything from Anker after they cancelled an order with PayPal approved payment because 'they couldn't verify payment'. Then they insist that the cancelled order could be reviewed if I put personally identifiable information into a random Google sheets doc.
All complaint handling appeared to be a bot. They refused to explain what was the concern with the payment and always responded with very similar 'apology' emails even when I indicated for every email they send i'd inform another person to avoid them.
I have bought a couple of products in the past also. I searched up my recent scenario and found others with the same experience