Good Afternoon, @Knightyme. 

Thanks for joining in on this thread and reaching back out to the Community. This isn't the impression I want to leave you with. 

I can walk you through the steps of how to turn off the send email reminders to customers option in your QuickBooks Online (QBO) account. Don't worry. It only takes a few easy steps. 

Here's how: 

1. Go to the Gear (Settings) icon. 
2. Select Account and Settings under the "Your Company" column. 

       3. Choose the Sales tab on the left-hand menu bar. 

       4. Scroll down until you see the Reminders section and click the Edit (Pencil) icon in the top right-hand corner of the section. 

       5. From here, you can turn off the "Automatic invoice reminders" option or change a reminder to what you'd like. 

       6. When you're ready, tap Save and then Done. 

Learn more about emailing reminders through this link. Next, you can start receiving your customers payments to an invoice. 

Once you do the steps to help resolve the issue of the emailing reminders, you can start getting back on track to running your business. Should you need any further information, feel free to ask. I'm only a post away if you need me. Take care!