My guess regarding why PayPal does so badly with edge cases: they probably use very low wage "contractors" to run customer service and support. Google, Faceboo

My guess regarding why PayPal does so badly with edge cases: they probably use very low wage "contractors" to run customer service and support. Google, Facebook, PayPal all rely on their automated systems working perfectly and handling as much as possible. But there's always edge cases where things don't go as planned, and they require human intervention. But big tech wants max profits, so they try not to hire anyone, and those that they do hire are as poorly paid as they can get away with. So you get very uninterested and unmotivated people handling customer support.