Good Morning @ColleenB27!
It’s certainly understandable when you are concerned about your safety. Smart Limits is a feature used for monitoring and managing a specific line usage. I will be glad to share with you further details on this feature in order to best assist you.
Please expect from me a private message shortly. This way, we can continue working together on the matter. I hope to speak soon!
Have a good rest of your day!
Shenoah, AT&T Community Specialist