People tend to shout when they don’t get what they asked for.
People tend to shout when they feel insecure about what they have and don’t have.
People not behaving according to you
People saying mean things behind (and in front of you)
People blaming you for their mistakes
Your competitor getting ahead of you even they started after you
All these things are going to happen.
The only job people are going to get done when they shout is, scare more people and make them aware of being around you.
If that’s not the destination you want to reach, probably being patient and kind could do the deal.
Like they always do.