Skynet Worldwide Express underdelivers spectacularly

It's likely a double whammy, but after renewing my licence disc through eNatis I didn't realise Skynet was the chosen courier. It's been exactly one week since I received the SMS to let me know my disc was on its merry way. I tracked it, but the tracking stopped last Friday (August 22, 2022) with the notification Delivery Exception: Appointment Required. Except that their FAQs don't really cover what to do, I have contacted them three times in response. There is no answer to enquiries on what to do or to receive my licence disc. Skynet is really poorly managed in terms of a courier. Usually, it is so easy to sort out something like a missed delivery, if someone wasn't available, etc. With them, there's just been no response. Their website was down for the majority of Monday and phones go - you guessed it - unanswered. I mean, I'm more than willing to go collect the parcel from wherever it lives now. However, doubtful I will find that information anytime soon,