Have you bought the item and has their been a problem with the delivery?
If a reasonable time passes the item's last estimated date for delivery and the item does not arrive, open a case for item not received and escalate on day 4 if not refunded beforehand.
We cannot tell you here why the seller changed delivery services, you can send them a message and ask if you wish to know why RM was not used.
@jon.laycock176
