Can landlord from commercial building lock me out?

Im the tenat of commerical building location, a restaurant under construction. Due unexpected delays, permits etc.,restaurant is not yet open for business. My landorld served me with three day notice to pay or quit. I currently dont have resources to pay but hopefully will in next month. My landlord wants no type of communication with me and he just locked my out of the location. He changed all the locks and i have a lot of personal property inside location such as refrigerators, tables, restaurant supplies,inside location. When i first rented location, it was not in good conditions. I completely renovated the location with my own money. please advice me