Lost package at Postnet

Today is the 31st of January. Initially i had a parcel that was sent to me via POSTNET. On the 21st December 2019 MY PACKAGE ARRIVED 12PM shows on the tracking. But yet i received a message on Monday morning 23rd December that my package is ready for collection. Yet to my delight I was informed that my package isn't with them.. I was asked my contact details as well as tracking information, i was told the manager would get back to me the same day. Hours passed no one contacted me. I then returned the next day i was given the managers number and asked to WHATSAPP the information ( tracking number, my contact details also pictures of what was inside the package) I did so and i was told that my package might be in the warehouse, they'll send the driver to look. All is well left it where its at. Manager never rep**** until i sent another message. This was that the manager and i spoke on the phone( via WhatsApp)

I then returned in January, this time there was a different lady at the desk, and she insisted that they never received my parcel at all. At this point i contacted Aramex and they confirmed with prove that my parcel was part of the bulk that was delivered on 21st December 2019.

Again pop got the same old line again ( please write down your contacts details)

After a week and few days later, i decided to pop in again, to my surprise i got to speak to the manager face to face. She informed me that they can not find my package, its been lost. She needs a copy of my ID and also the prove of purchase. I gladly did so i was told they going to send this in and I'll be contacted.

Its the 31st today still nothing. Any advice? How long does it take to be refunded. I really needed those parts General Motors are asking 6000 for one of them and i had two that I received from a buddy of mine. Is there any light at then end of the tunnel?