Hi @Lizeth_62579 and welcome to 3Community 👋
I've moved your post to our Prepay plans and services board as it's more suitable for your query.
I'd love to have a look at this for you, when you say you were charged twice were you trying to top up twice or do you have a scheduled top up set up? Do you know how these top up's were applied? Was it through your My3 account, the app or over the phone?