INCOMPLETE CHANGE - Consumer Complaint for J&T Express Philippines

My driver’s name is T VENCENT SUAN. His contact number is 09502156405. He delivered my parcel and then i proceeded to pay him 1,500 pesos because my total amount to pay for is 1,144 pesos but he gave me only 60 pesos as my change. I didn’t notice at first but then I counted my money not even a few minutes after and then I called him back, he then came back and wouldn’t give me my change. He even proceeded to tell me that I only gave him 1,200 when in fact my lolo could confirmthat he saw me give him 1,500 pesos. We settled and he gave me only 150 pesos because I wouldn’t stop asking for my money and my lolo wanted us to stop arguing. I’m complaining because I think he’s not able to do his job well and I don’t want this to happen to other customers as well.