CSA Electrical

I signed up with CSA Electrical, LLC on July 14th but had to cancel on August 12th. They sent me an invoice for $10,000 for equipment that I never received. They even came to my house and threatened to install the solar system that I didn't want anymore. The contract clearly states that they can only charge me for the work that was done. I asked for receipts of the work done before I canceled, but they only sent a general statement of $10,000 which was not explained in the contract. They even called the bank pretending to be me to resume the project, which is fraudulent. I had to cancel with them and the bank again on October 25th and 31st. I hired a lawyer, and if they don't waive the fees, I will take legal action in a small claims court.