Someone please help!!!!

we currently have a website that has 3 levels of prices for different users. such as a distributor of our products has one price, a seller has another, and the general public has the highest price. something has been changed in our settings and now it's showing the lowest price [distributor price bracket] to ALL USERS for ALL PRODUCTS!!!

I have tried going through the settings but can't seem to figure what has been changed or what i need to fix to correct this issue.

Does anyone have an idea what I can try? I have run out of ideas or places to check. Many thanks

I've gone into all of the option and settings menu that I can find for both of those sections and can't seem to find anything that will help. is there any general menu somewhere, like a "site menu" that relates to the entire site and all it's functionality?

My apologies for my ignorance, but I have no idea what that means. lol

I've already gone through the "user" menus and "user groups" that I can find

[eg
users/groups
user/access levels
etc...]

not sure where else to check. =/