I'm sorry to hear that but maybe, just maybe it is meant to be. You have a happy peaceful house hold now with the three beautiful kitties you have. Who knows if the fourth one wouldn't upset the applecart. I'm sorry for the way it was handled.
Make sure you put yourself on a waiting list. I got Ivan back after adopting him out at 8 weeks old to my landlord's son, who bought him for his little toddler daughter. When he wasn't "cute" anymore, at 2 years old, he thought of me and offered him to me , before he did what he was originally going to do -- bring him to the shelter. Not sure to this day what kind of intervention was involved in that.
Just in case you are wondering why I don‘t post pics of the orange cat....10 minutes before I wanted to go and get the cat yesterday the farmer‘s wife called and told me that her son has given the cat to his girlfriend. I am so mad and sad and disappointed because she promised me the orange beauty!