Dollar Tree

I asked assistant manager who said his name was derma who was at the register he wouldn't spell his name for me asked what I needed it for.. He Says couldn't leave the line to open the bathroom remind you I was shopping and couldn't complete my shopping as I desperately needed to use the restroom..in the future I would hope my elderly grandmother would not have to encounter such an inconsiderate individual who sets a bad name for your store. Please address this situation expeditiously.. Thanks In Advance
A frequent customer
Marlena McBride