Security tag not removed

I bough a lather jacket from Zara Menlyn Mall and the lady that assisted me forgot to remove the security tag from the jacket and to my surprise it didn’t even ring at the door so when I got home to try the jacket on, I noticed that it still had a security tag therefore I wasn’t gonna be able to wear it for an event that night and now I’m gonna have to go back to Zara which quite an inconvenience for me just so they can remove the security tag. I was so frustrated by the whole situation and I had to change my outfit as I couldn’t wear the jacket as I planned to. I’m quiet disappointed my this whole ordeal and the fact that I have to make time and go to Zara again which isn’t part of my upcoming schedule.