Hi, @sheilap1. It's good to have you here in the Community. 

I wish you didn't have to experience such trouble with your transactions. Let me ensure you that this will be addressed right away and redirect you to the right support. 

But before that, may I know first what bank your clients are using? This way, I'd be able to assist you with the right solution. 

Also, if your account shows duplicate transactions, we can exclude and delete them. This prevents the same transaction from showing in your bank feeds. If you haven't done the process yet, you'll want to follow the steps given by my colleague above, Rubielyn_J. 

But if this isn't your client's case, I recommend contacting their bank. This way, they'll be able to review the account and determine the root cause. 

If the issue still persists, it would be best to reach out to our Customer Support team. They'll be able to pull up the account in a secure environment and further investigate the issue. 

Refer to Candice C's steps on how you can reach out to them.

Please consider checking our available hours when contacting them to ensure we address your concern timely.  

You can also visit this article to learn how to manage downloaded transactions: Categorize and match online bank transactions in QuickBooks Online. 

Keep us posted if you have further questions about duplicate transactions in QuickBooks Online. We're always here to help. Take care and have a nice day!