This charge reflects the standard price of our Plus subscription (£30 + VAT), if you had previously been paying a lower price it's likely a discount has now expired, or your have upgraded your QuickBooks plan.
If you have any further queries please reach out to our team on 0808 234 5337 (weekdays from 8am - 7m, free from UK mobile & landlines) or via our live chat service so that we can view the billing details on your account.