I am learning to drive and I recently have been with an instructor that my older sister learnt with. On my first lesson last month, he said that if I keep saying sorry or saying thank you he will "put me over his knee and spank me". Also, he continuously makes reference to this by slapping his hand in that motion every lesson and is constantly asking me if I have a boyfriend and "I should have a boyfriend" because "a girl like me should have a boyfriend". I always feel on edge before the lesson and I can't perform to my best standard because I always feel so uncomfortable. My mum says that "he doesn't mean anything by it and I should take it as a compliment". This instructor is in his 60s and I'm 17. She said that my sister mentioned he made one comment she was fine, but, for me, it isn't just one comment. My mum has him on social media and everything and she's saying that "There is always something wrong with me". What should I do?