Subscription Double Billed then Completely Cancelled

I signed up to Simple Start in April on the 90% off deal. I paid for an annual subscription and set up a direct debit with the next payment due April 2027.

2 weeks later on May 12 I was billed a monthly direct debit by Quickbooks of 20.00. I cancelled this duplicate direct debit and informed Quickbooks that I had done so via live chat and asked for a refund in the duplicate charge. I was told that I would receive a form for a refund request via email. I have not received this. 

Today Quickbooks emailed me to say they had cancelled my subscription and have removed access to my account. 

So I’ve paid an annual and monthly subscription (that was not set up

or approved by me, so who knows how that has transpired). And I still don’t have a functioning Quickbooks account. 

I can’t get an answer from Quickbooks. The live chat just dropped off after 2 hours of waiting 10-15 minutes between responses with no usual offer of resolution.

How do I get a response from Quickbooks to resolve this? I’ve spent hours setting up this account. Linking to my bank, matching receipts, setting up with HMRC , invoicing clients and Quickbooks cut me off having billed me twice. 

How do I get a response from Quickbooks and get my account live? 

Or my money back and I’ll just move on to software that works.