You can't force someone to respect you... but you can choose not to allow them to disrespect you
Question, are they deliberately disrespecting you or is it the way you have perceived what they said? Do they know enough about you to know something may upset up? This is a complex subject with so many ways to look at it. Whether its disrespect in real life, on social media, from businesses, from people you know or complete strangers... the one thing we all agree on, if you feel its disrespectful take some form of appropriate action...