Just an update on the Vpost UK nightmare.
All except one of my items took a week for it to be reflected. The arrival date indicated on each item by Vpost is pure nonsense since the seller's courier service showed that the items were delivered a week earlier.
I gave up on Vpost and paid premium via Borderlinx. The experience was so different and in a positive way. With items delivered to Borderlinx, every item that was mailed out took about 2 days from the time the seller indicated that the item had shipped out before Borderlinx sent me an email that they had received the item. This means Borderlinx processes the item and updates users immediately.
Vpost customer service is terrible. Calls to their hotline were instead transferred to Speedpost, likely due to high call volumes. High call volumes to a customer service line suggests that bad things are happening. The standard answer their customer service provides is 'please give us another 2 to 3 days etc' regardless of the number of days that had passed since the last call. Promises to call back do not materialise i.e. they will never call you back if an issue goes unresolved, even though they told you they will.
I would suggest people out there to reconsider Vpost UK. If you really have to use Vpost UK, do it with a tracking number that you can monitor, because Vpost is now resorting to asking for proof of delivery to starve off complaints. And thereafter, cross your fingers, wait indefinitely, and hope for the best.