I am 50% deaf and badly need sub-titles to follow the program. Yet I estimate over two-thirds of ALL the movies and TV series on Amazon Prime have no sub-titles. Given that 40% or more people over 50 have hearing loss, this is clear discrimination against a large percentage of the population. I complained several years ago, and was told Amazon were 'working on' the problem. But nothing has been done.I am amazed that Amazon haven't been called out by government on this practice.