What a day

So the other day this customer of mine comes into buy a part for one of her key machines as I have access to parts and all. She has bought cutting wheels from me before but has very little grasp of the english language, so when she says" I need wheel like last time" I assume she means like the last 10 times she bought one....Turns out she has bought a new and different machine since then - so when she gets the wheel back to her shop, and despite the fact it looks nothing like the wheel she claims she "wanted" she uses it for 3 days. She then comes in and freeeaks out demanding we overnight one in for her. So we do - then hold it hostage until she pays the $150 air freight that she assumed we would pay because she only speaks English when it is convenient.... What a day.