That actually happened in a tournament I was in once in the late 80s. The guy was livid that I claimed the point.
Not only did he jump up and down, he ran towards me screaming and waving his arms.
When the tourney director came out and told him he was wrong, he called a foot fault on me from the opposiste baseline (doubles, he was receiving, I was serving). I have never been called or even warned for a foot fault before or since, despite having played USTA and many tourneys over the years.
Some people are just dbags....