Family Dollar review: employee

Was shopping with friend on March 28, 2019 and as we were browsing through the store we heard loud shouting, it seems a male employee was berating an older lady behind the counter. He was in back of store and she was behind counter trying to get his attention. He kept yelling at her as he moved to the front. I do not know who was cashier and who was manager on duty but, being older person myself i was appalled at the respect this man was showing towards the older lady. My friend informed me that he had acted the same way couple times before even cursing in the middle of store and trying to involve customers into his verbal assault of the same older lady. If he treats a coworker like this how would he treat an older customer? I left immediately and will never return to this store or any Family Dollar, as it appears they let this behaviour go on in their stores.