Thanks for replying!
I can confirm that both sellers have said they have sent the item via Royal Mail Fist Class.
I have also contacted Royal Mail.
More info:
3 weeks ago, my post office was run by one man, and all of the merchandise' prices had dropped eg £1 envelope now was 0.50p
the next week, the post office hired staff and got fixed up back to regular operation,
thats when my packages started going missing...
Sound fishy?
Thanks.