Upgrading from Mountain Lion 10.8.5

[shazra]

I'm stuck in a loop guys, please help.

Want to upgrade from Mountain Lion 10.8.5 to Mojave.
I am told I cannot do it directly, need to upgrade to El Capitan or High Sierra first.

When I go to download El Capitan or High Sierra from AppStore I get a message to update my BILLING INFO when I tap OK on that, I get a message I need to update my software first! It's a chicken and egg situation.

Pls advise what do I do and how?

Details of my computer:
iMac, Late 2012
Memory 8 GB
Software OS X 10.8.5 (12F2560)
Storage 200 GB free

Thanks a billion!

 

[MBAir2010]

This is weird, or they do not release any older OSXs thru the app store anymore as rumored this summer. I would try, try again. you are going from Mt Lion to ElCap?

 

[velocityg4]

Try updating your billing info through iTunes. You can also try through iPhone, iPad or Android.
https://support.apple.com/en-us/HT201266#computer