Would popping the pot into the freezer work? Use gloves obviously as your hands would stick to the frozen pot. Try chipping it off perhaps.
Failing that pop it into a hot oven with foil around it to capture the melted wax, and wipe clean with kitchen roll if it melts off. Again be so very careful to wear heat resistant gloves.
Option 3 - throw the thing out and start afresh or ignore the less than spotless pot.
I use my normal nail polish remover to clean the pot.
1- Start your wax pot.
2- When wax is melted clean it with any cloth or cotton swab.
3- in the end remove any bits of wax with your normal acetone.