@JaeAnnC   "I understand how inconvenient it is for you to delete each line item in a bill. In the meantime, QuickBooks Online (QBO) doesn't have that ability."

I realise I am two years late on this, but do you have any idea how condescending that sounds in English?

I feel like you don't.

This is the customer service representative of saying 'Oh no! Anyway.' and it's only funny in a terrible kind of way.