A couple of months ago I bought some items from an online company and returned some of them. The company has just discovered that they accidentally refunded too much money to me, and now want me to pay back the excess. I had not noticed that they had refunded too much, and I have made financial decisions since then based on how much money was in my account, thinking that was correct as a statement of how much money I had. The amount the company wants back is nearly £140.
On the one had, I can see that the company feels I should pay them this money so that their accounts are in order. On the other hand, it was their mistake, and if they hadn’t made it, I would have made different decisions about my money since then. Do you think I should return the money to them?