Abuse of power by flight attendant

I was on a flight Q1363 from Doha to Johannesburg on the 8th of July 2025 . There was an tall African lady who was working and I asked her for a snack as the people serving had already walked passed the seat I was in (I had probably dosed off). I asked for a snack for both myself and my 80 year old grandmother I was travelling with. I was met with an attitude and pulled faces. When I asked if there was a problem she threated to call security on me and kick me out the flight. This was a blatant ABUSE of power as we all know their word would be believed over mine and I ran the risk of being kicked out or fined/banned for asking for a snack.