My recommendation is to be very, very good at the one core technology you love using.
This way you can go out and seek your clients that will pay you more for those results you are bringing to the table. This will then also free you from projects you don't like as much and thus free up time to learn stuff you like to learn.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
I am a consultant as well.
My recommendation is to be very, very good at the one core technology you love using.
This way you can go out and seek your clients that will pay you more for those results you are bringing to the table. This will then also free you from projects you don't like as much and thus free up time to learn stuff you like to learn.