Take a look at your bill/invoice to see why.
You will find an overview of the costs per category or an overview of the costs per call, text message and data volume on your online invoice/bill. This enables you to compare your invoice/bill with previous ones.
Your bill/invoice may be different from usual because:
Do you still have questions about your invoice/bill? Contact us.
Note: We recommend that you pay the invoice/bill while you are waiting for us to respond to your enquiry. This way, your line(s) won't be blocked.
Don't agree with the amount? Contact us within the month following the invoice/bill date. If you don't, your complaint may be invalidated.
Have you recently changed your monthly plan?
Then the amount may be different this one time. Read more about this.