Huhn Welding Supply review: Not be charged for merchandise they took in over 4 month ago as a return take off the $355 welding hood return to the store 5 months ago

About a year ago Huhn Welding Supply Ontario NY allowed me to open an account up to $1000 credit I got some items on credit but was unable to use them because of covid and was told that I can return them I return a welding hood, wire two cylinders full of welding gas the only items I didn't return were

Some gloves and a box of wire. I spoke with the credit manager at huhn, and says that I owe 750, then the creditor says over 1000. They're throwing all different numbers around that are inaccurate and threading me that they're going to take more serious action. The item in question is a welding hood that I returned to them 5 mons ago and they're now saying I have to pay for the item when I don't have it, they do. They took it in as a return over 5 months. I offered to pay for the items I used and didn't return as they the company has the items as they took them in as a return they are trying to threaten me with collections and charge me for items they took in as a return over 5 months ago.