Could you fill in the details on your profile. This way I can check what costs are on this invoice.
Let me explain to you what happend if an invoice won't be paid.
If your simcard will be blocked, it means that there are/ is an invoice(s) not bin paid yet.
Before we will block a simcard, you receive several text messages and you can check the app for the invoices. After a longer period the simcard will be blockerd.
It is up to the customer to pay the invoices on time. If you don't understant why there are extra costs on a invoice, you can contact customer support. my advise is to do this on the moment that the invoice will apear in My Vodafone. From that moment you still have a few days.