Acp credit not applied

I signed up for and received the acp benefit. It applied just fine the first month. This would have been the second month. I saw it wasn't on my bill. So I called. Call 1. Doesn't always apply on exact same day. Can check later. Call 2. Still hasn't applied. Check back later. Call 3. Sometimes won't apply til the day before or the day bill is due. Well, it never appeared. I've seen comments online from other xfinity customers that it wasn't being applied either. Which is why I called all those times. No one has seen it as a problem that needs to be addressed. How do we fix this?