• Do you not see any usage or incomplete usage details? Read the following tips.
• Is there a problem with MyScarlet? Make sure you're logged in with your personal MyScarlet account.
• Staying informed? We send you for the current month free text messages about your usage. You can configure when to receive them.
• Need another rate plan for your mobile phone? Change your subscription. 
• Do you use a lot of data? You can order extra data.
• Cost control? You can block pay-for numbers or expensive calls (abroad, ...).

Has this solved your question about usage?