I’m getting billed $2.99 at least 2 or 3 time a month I believed The 2.99 was for storage one time a month

iCloud storage is linked to an Apple ID; all devices using the same Apple ID have access to the same storage plan and you are only billed once per month.

If you have multiple phones in a family sharing plan, you can share an iCloud storage plan and will only billed once per month,

This is primarily a user-to-user support forum; other Apple users like you. We don't have access to information about charges to your account. See each of the steps in the following instructions. They include information on contacting Apple Support if the other steps don't help: If you see 'apple.com/bill' on your billing statement - Apple Support

or go to Subscriptions and Billing - Official Apple Support

Hello,

No, you don't pay per phone unless you have separate subscriptions on different phones with a separate Apple ID. If you have one Apple ID you basically pay that amount once a month. If there is something wrong with it then it is best to contact Apple: Official Apple Support

Perhaps needless to say: but check with your subscriptions if this is just for Apple cloud or if you might have other subscriptions running as well.