Seeking compensation for non- delivery in behalf of home refurbishments agency

I have a contract with a refurbishment agency. They estimated that the work on my home refurbishment will take 1 month, however, their contractor fell ill delaying my work by 3 months and forcing me to hire a private contractor to finish the job, as my home was left without proper flooring for over a month. The job was not delivered on time and no replacement was made. What are my legal options?