I am an interior designer that has a contract with a client who has a property in Imperial Beach. On Saturday, June 12, 2021, I supplied the remaining household and furniture items to fulfill the contract. The client has now breached the contract with payment timelines and now refuses to pay unless I submit receipts which are not a part of the contract. Can I file a Mechanic's Lien? Do I sue him and through what court? Can I ask law enforcement to accompany me to the property retrieve my property? Thank you.