Hi @PTran8,
There is a workaround that involves lists (as lists can be used for re-enrollment). When you create such a list…
… contacts would enter the list when there is a new call and leave it after one day. When they re-enter, the workflow re-triggers.
You’ll probably notice the limitation of this workaround immediately: It will trigger once per day max. (If you need a higher frequency, you’ll probably have to look into custom code actions in Operations Hub Professional.)
Hope this helps!