Freephone Telephone Number Amazon Seller Central Support UK

There’s isn’t an official one I’m afraid, free or otherwise. You can search the forum, some people have quoted numbers but whether they work or not is another matter.

If you gave a pro account, you can open a case and ask for an instant call back. If an individual account, you can open a case and ask them to call you but this is at their choice of time. Not unheard of to be in the middle of the night.