Oh, I've been there - it's so stressful when they start talking collections. 😬 Just to clarify how the daily limit actually works, in case it helps anyone else reading:
🔹 The daily limit is an average over the month, not a hard cap per day
🔹 As long as your total monthly spend stays at or below $15,000 (based on a $500 daily average), you're technically within the limit
🔹 The algorithm will naturally pull back on higher-spend days once it learns which hours or placements convert best for your audience
It's pretty normal to see a few days spike over the limit early on while the system figures out the optimal delivery window - then it should self-correct later in the month. I've had clients panic over this exact thing, and it always settled down after the first 10-14 days.
If they're already threatening collections, I'd double-check your actual total spend for the billing period before pushing back. Sometimes the ad account itself isn't the issue - it's a delayed billing threshold that got triggered.