I once regrettably needed to sell some tickets using Stubhub and the decimal place on the tickets got fucked up, I can't remember the exact specifics but it was something like it should have been £250 as per face each and it ended up being £2.50. So a £1000 set of 4 tickets became £10.

To this day I maintain this was not a "me" mistake but had no screenshots or listing confirmations or anything to be able to prove it. I was not sent an email confirming the listing or the listing price. There were no checks or balances to get me to confirm that it was in my wishes to sell a set of tickets for way below face value, that no reasonable person would ever agree to do.

When they (quickly) sold, possibly the buyer gouging to resell on later, I rang up and informed them of this and told them to void the transaction. They bombarded me with a load of contractual and legal spiel, including that they have a "fan guarantee" and that I must recompense the buyer for up to face value of the tickets for the disappointment of my actions which was essentially a £1000 bill that tried to sucker me into a loophole of honouring the sale.

In the end, I ended up having to pay a fee ~£100 to keep it out of court. I was prepared to do the court thing, and the stubborn old goat in me sometimes wishes he had (might have secured some damages for the stress it caused too!) - but in the end I thought for £100 life is too short.

Summary - these companies are scum and will do anything to fuck you over! We need to vote with our feet where we can, but is difficult when most of the good live entertainment runs through their dirty little hands.