Our trial has finished and we’ve signed up, but it’s set up a new company up on my email add and shows our company as cancelled. What do I do to reinstate our company?

I'll provide a the necessary steps to correct the issued based on the details you've provided, userkirsty.

Instead of subscribing to the existing company, it seems that you have created a new one using the same username and password. Hence, you now have two companies; active and the cancelled ones.

We can cancel the new company so you won't start over with your data. You can use this link for reference: Cancel your QuickBooks Online subscription.

Then, we can update the billing information of your existing company. From there, you can continue entering your data. Here's a link that you can use to update your details: Update billing, payment, and subscription info in QuickBooks Online.

Since you already have multiple companies under a single username, you can easily switch back and forth: How do I switch companies?

Feel free to get back to us if none of the things I've mentioned above suit your situation. We'll be right here to further assist you. 

Thank you. 
I have now cancelled the subscription for the 2nd Company but we’ve already paid for the month - are we going to have to pay you twice? We’re also not being offered the discounted rate for subscribing the original company. I don’t want to pay you twice and I want the 4 months discounted. What do I do? 

Userkirsty, If you can either contact us on QuickBooks UK on FaceBook or Twitter in a PM/DM so we can view the accounts(the Community will redact private account details or call our care team on 08082345337 and we'll see what we can do about the discount/money paid.