Ygc Construction

It's one of the the worst decision of my life for choosing YGC construction. The work was below average but the real problem was that the owner of YGC Construction did not respect the contract. We both agreed on the specs of the project and signed a contract. I've paid YGC Construction the full amount of the contract after the completion of the work. However, the owner came back with a list of hidden/extra fees (e.g. time spend to explain to his crew how to do the job on the contract, time to go back and forth to the site, time spend on the site the day of the job, time spend on the site the day after the job,etc.). This was a shock to me since I did not ask for any additional work outside of the contract.
After I refused to pay, the owner of YGC Construction threatened to put a lien on my house and to sue me if I refuse to pay him. The owner continued to harass me with monthly bills and charging predatoy interest fees of 36% on the hidden fees. I will have to hire a lawyer to deal with this company and put a stop to their harassment practices.
Avoid this company at all cost if you don't want to have problems.