Needing Invoice to Keep Subscription from Expiring

I am having the hardest time with taking care of my business VIP invoice. I have spoken with my account manager last week and I was told that it would take 24-48 hrs to receive it but that time has passed and our subscription is due for expiration in 2 days. I have called her (account manager) numerous times and left messages and have even contacted suppot (both via chat and over the phone) and they have supplied me a different account manager's informatin and have told me that I will hear something within 24 hrs. I don't understand why getting an invoice is so hard during a renewal and how they can just allow for business accounts to come close to expiration without proper customer service. Thank you all in advance!