DEPENDS WHAT THE ISSUE IS ABOUT!

If you check Account Health some accounts do have the ability there to request a call from the Accounth Health Team.

Otherwise if you go to Get Help click My Issue is Not Listed type I need to speak to someone then tick 'Account Related' on the boxes that show up. It'll then give you available Contact Methods.

Note if you account is deactivated for any reason - you may not be able to request a callback.