2011 Ford E-Series E-350 XLT Super Duty Extended

We are a Towing company in Lebanon Mo. We towed an abandoned vehicle at the request of local PD. After getting the owner information back We found that Sedalia Automotive was the lienholder. I contacted him and negotiated the tow and storage bill down significantly to $250.00. I told him I didn't mind working with him since he was the lienholder. He then asked me how much to tow the car to Springfield to a lot they work with. I told him if he could wait a bit until I had another trip down there I would do it for $75.00 (normally $225.00) bringing the total to $325.00. He agreed and I sent an invoice..After taking the vehicle to the destination I reached out and he ignored my calls until I called with a different number. He then sends a check for $200.00 which we did not agree on so I sent it back with another copy of the invoice. I still have not received payment and after I contacted him he started yelling at me that I was a crook and everyone knows what I do.... I guess we will go to small claims court. BEWARE! ***EDIT*** We ended up getting this resolved after we had towed in another vehicle they own. The driver that reached out to us was very professional and felt there was a misunderstanding with the owners. They paid their bill with no further issues.