Genuinely the worst customer experience I've had

My shipment has been sitting with Fedex since the 28th of September with a Clearance delay. I checked every couple of days to see if they needed anything from me with regards to customs, I initially provided my ID number and then later an import code. A week or two later I was told that Mckayla was trying to get hold of me about the shipment, I was provided her email address and sent an email on the 28th of October. I checked back with the helpdesk later as I hadn't received a reply, I was asked to forward the mail I'd sent to Mckayla to the helpdesk rep so that they could forward it to her. After not receiving a reply I sent another email directly to Mckayla. After still not receiving a reply I checked with the helpdesk again and was CC'ed in on a mail to Mckayla. After not receiving any feedback I checked with the helpdesk again and was asked to forward a mail again and told that this would be escalated to Mckayla's manager. There have been a few helpdesk interactions since, but I have still not received any feedback apart from those initial mails from helpdesk agents. Currently when trying to use the chat feature on the site my requests are being closed automatically. Just for reference every interaction with Fedex mentioned is separated by 1-3 days.