Family Dollar complaint: Very Rude experience from Manager!

I went to family dollar with my elderly grand mother and daughter. My elderly grandmother asked an associate in the back of the store to help locate wasp spray. The employee asked what she wanted in response to the question do you work here. The associate was eating hot fries. I was not with her at the time and she didn’t tell me knowing it would be an altercation. While paying for my items the same associate was standing again eating hot fries. Other associate asked my grandmother what was wrong my grandmother described how rude she had been treated and was told she didn’t have to return. My grandmother is 67 years old. I went back into store to get her name was told she is the manager her name is Ciara very aggressively like she wanted to fight. The only reason I left is because my grandmother was very upset. She acted this way in front of customers and one said she couldn’t believe she was a manager talking the way she had. Something needs to be done about this this is not a way to treat a senior that shops a lot at Family Dollar. I will not be returning while this unprofessional person is employed I have never experienced anything like this from a store ever. Also my grandmother has many grandchildren upset about her treatment I cannot assure there will be no confrontation at this store with this girl. Eating hot fries without a mask and the way she acted she doesn’t seem to value that position at all. VERY RUDE and unacceptable