Refusing to stick to their own rules.
Ordered a product that didn't work and received a refund - fine. Was told at the time I couldn't reorder that product again - also fine. Have a messenger conversation confirming this. I've now tried to order a completely different product and my account has apparently been locked, despite me presenting evidence that I was never told I couldn't order a different product in future. They then told me I could only order the new product if I paid back my entire refund of the old product! Absolute joke. Update - after several complaints they have agreed to unlock my account.