Ace Industrial Supply Unwanted tools mailed net 30 that we never ordered Burbank, California

My husband owned his own business running a dump truck. He was the sole proprietor, had no employees, and no other authorized personnel for conducting business 3 years after he dissolved this business, we got married and moved away. Since then he has had no ties to the business. No left over debts, no left over credit cards. Everything was dissolved. 

A few days ago we received a packaged and the recipient's name was the name of his business and the address was his former address but it had been forwarded to our current mailing address. It was a 5 sets of tools valued at more than 500 dollars and it was sent net30 (balance due in 30 days). It was dated earlier this month and we had not ordered it. 

We called Ace Industrial and they said that someone did order and that if we want to send it back we have to pay to send it back ourselves. The balance was due if we did not send it back within 14 days of the purchase date which had already passed by the time we received it.

We told them we did not order it. And pointed out that it was sent not to our name but to a business that was dissolved. The phone number they had as a contact number for us had not been used in 3 years and the address they mailed it to had not been used in the same amount of time. The CSR (Customer Service Rep) didn't care and said that the money was due anyway. We asked why they would send something so valuable out net 30 without more information as to our credit. And they weren't able to give us the information. THey would not tell us if it was ordered on the phone, internet, etc. 

I don't know what kind of business they are running. But it sounds like they are making it up as they go. They send expensive materials out and make you pay to send it back and threaten to send it to collections if you don't pay. What I want to do is sell the tools and never let them see a cent. Thats what they get for sending hundreds of dollars of tools in the mail to a business that doesn't exist. Too bad I have a conscience and don't want my credit to be dented by these criminals.