Over 3 days for a paid receipt

So if I go to a grocery store or any store for that matter I pay for my items/service and receive a receipt on the spot or at a minimum the option to receive one.  

Why does Teamviewer wait over 3 days to provide me a receipt?   Even after repeated phone calls, emails, and the like.   Still nothing!   I have checked my junk mail, spam, etc. nothing.   I also did an Office365 message trace and nothing has been sent from teamviewer.   Next is a BBB complaint or I just start disputing the charge.   

My accounts payable team has a strict policy of 72 hours of providing a receipt.   My purchasing rights as an IT administrator have been frozen since Teamviewer has failed to do their basic job.   Next year during renewal time I will be sure to look for a different remote support provider.  Plenty of options that are out there.