I was on the bus from Grenoble to lyon with my family on route 724, direction Nantes Haulère (9.00-10.30). Me and my family were sat talking, and so were a lot of other passengers. I was sat on seat 03c and my family were on 03b and 03a (across the aisle). The name of the driver was Cyril. He was bald middle aged man with glasses. He stopped driving the bus about 15 minutes after we set off, and walked over to me. He got very very close to my face and shouted at me to be quiet in front of everyone. He pointed his finger in my face and was aggressive and rude. I was extremely shocked because i was not talking loud, and if i was he could have asked me politely and with respect. Instead he was rude, disrespectful and patrionizing. We were sat near the front talking in English. People around us were all talking in French. I don't know why he chose to pick on me out of the whole coach, but i think its because i was sat by myself. I could see he wanted to intimidate me and he seemed to enjoy embarassing me for no reason in front of everyone on the bus. He had a microphone and he could have politely asked everyone to speak quieter if he wanted. My sister speaks french and could have translated to me if he had done this. He also knew she spoke french because they spoke when she showed him her tickets. There was no excuse for this. He wanted a reason to embarass someone, but he also seemed to really enjoy doing it I often use the flixbus, but i will never use it again because of this. I have caught buses for years in many countries with many different companies and this was the rudest and most aggressive driver i have ever had.