Warranty.....the only thing we earn is busy...

My current work which I have taken over from WTF (resigned) include handling the purchase of warranty parts. The service guy will request what ever parts required and I will do the purchase. Sound easy hor......
However the following up is time & energy consuming. Due to urgency, the services guys tends to take/borrow parts from existing machine or from our suppliers. Then we have to purchase and return to them. The whole inventory is in a mess.
This is the 3rd weeks of Sep liao. They are suppose to start the service module of the SAP since 1 Sep. Till now I still dun see anything from the service module and we have to followup with the manual paper work. That service manager promise to follow up with the SAP but have not see anything from him except the continues request for parts. You think you are the oni one who is busy meh??
Then that mosquito is the best. Ask him to press them to starts the service module and he go allow them to take the parts first then followup with the SAP. See lor....until now still nothing been done.
So tired!!