How to suspend an account in WMM/Cpanel :-
Step 1 :- Login to you WHM :-
Step 2 :- Click Manage Account Suspensions under Account Functions in left menu of WHM.
Account Functions >> Manage Account Suspensions.
Step 3 :- Select the account in question by clicking on either the username or the main domain on the account. If you are suspending an account, you can place a note in the box to help remember why it was suspended.
Step 4 :- Click on either Suspend or Unsuspend.