Pep Paxi ruined my graduation day with a 3 months delay

Been waiting on my parcel to be delivered since 7 Jan. I’ve never been so disappointed in my life. Pep Paxi ruined my graduation day. My package was from Springs to South Gate. I’m on the third month now waiting. When I call they told me I’ve escalated but after calling more than 10 times I don’t know what to do