Yes, this will be painful but you need to take control of the relationship and the situation and that means you can't be at their beck and call or come across as too available. Simply ignore any message they send you.
That 30 days of absolutely no contact (and I mean none) exists for
3 reasons . . .
1. To give you time to work on yourself and get out of "crazy mode" around
your ex where you want to text him or her like crazy all the time . . .
2. To let any anger, jealousy or other "hot" emotions between you and your
ex cool off a bit.
3. (this is the big one) To give you the power in the relationship.