What is it with people this week??

I have just had a customer come into my shop browse, try on and buy from me. As we were waiting on her card getting authorisation she asked me why I was closing down???? My jaw must have dropped to the floor as she then said "Oh! Are you not closing?"
I was so shocked that I had to say "No I am not closing down! I am just having a good sale with real reductions!"

WTF, can a store not have an actual sale with proper reductions without people thinking I am either:

1. Closing down
2. Losing my mind and not aware of the prices (one lady whispered all the prices to her friend, I think it was in case I heard and changed them!!)

Am I just taking things a little to much to heart this week??