Need our Invoice cannot log in

I cannot log into our account, even though I have the correct password because the code that comes to my email (which is correct), will not work. I would simply like our invoice because my business requires that I enter all invoices charged to my business credit card. Customer support says because we don't have 25 lines, they cannot help us, and it appears there's also no one to help us here either. Should I recommend a company with better customer service to my boss?