Final answer:
The best course of action if a firm of decorators does a terrible job in your home is to request a redo or corrections from the decorators. If they refuse, you can leave a negative review online or seek legal advice and take legal action against them.
Step-by-step explanation:
If a firm of decorators does a terrible job in your home, the best course of action would be to request a redo or corrections from the decorators. It is important to communicate your concerns and give them an opportunity to rectify the situation. If the decorators refuse to fix their poor work, you may consider options such as leaving a negative review online to warn others about their services or even seeking legal advice and taking legal action against the decorators.