8 week parcel delivery delay and poor customer service

I was expecting to receive an international package on the 3rd of July 2020. It is now 8 weeks and 3 days later, however, I have not received it yet! I have called 19 times with an average waiting time of 8 minutes (ranging from 30 secs to 19 min) and all have promised to escelate the issue and get back to me. I have given my details numerous times, I have asked two different agents to email me and only 1 has. The last agent I spoke to was rude and decided to drop the call when I asked for her to confirm my email address (as I was still awaiting a prior communication). I would have understood if there was feedback/communication from FedEx instead of me calling all the time to see what has been going on. All in all, very very poor service delivery and even worse customer service.