I’ve finished a trial with quick books on 7th Jan and was then due to pay a reduced rate for a few months but the payment seems to Be £14.99

Hi there, Allow me to help you to put you on the right path to make sure this gets resolved. 

I'd suggest contacting our customer care team for them to check your account why it goes to the normal rate after the free trial, instead of the reduced rate for a few months. They have the necessary tools to assist you further in a safe and secure environment. 

I'll show you how: 

1. Go to the Help icon and choose Search.
2. Click the Contact Us button and enter your concern.
3. Press Continue.

See this article for our operating hours: QuickBooks Online Support. 

It includes the schedule so you can call us at a time convenient to you. Additionally, I'd like to leave this article to learn how to manage your QuickBooks Online subscription, whether you need to update the card on file, change your subscription, or just view your billing history: Manage billing, payment, and subscription info in QuickBooks Online. 

I'll be around if you have other questions. I'm always around to help!