I was a farm equipment parts manager. If they had an account I just ordered the special order the part. No account I put it on a pending charge card. When parts came in I called them to let them know their part was in. If it wasn't picked up in a couple of weeks they got another call. Still not picked up the part was billed to them and an invoice attached to the part. You would be surprised the amount of parts that would get paid for and still not picked up. Those parts were returned to the manufacture with a 20-50% surcharge. Some were not returnable.