So I forgot I had a mobile sub and dropped it and removed the mobile sub, but when I got to try to get the Gold Premier it says the offer is not available. I'm wondering if jagex payment support team can do some sort of work around so that I don't have to wait to buy the gold tier premier pack.
Is the previous mobile sub membership still active on the account?
If the mobile sub membership is still active, you will need to wait until it is all used up and the account returned to F2p before you can buy Premier Club.
You cannot add any other type of membership to an account that has an active mobile sub membership.