I'm Not Happy with Zoom

I believe their invoicing department is an absolute horror. I regret my purchasing decision. I have been a very happy paying customer of Zoom for almost three years. The connectivity and quality of web calls is unmatched in the industry. However, their invoicing is a disaster I believe! We upgraded our existing account to use also Zooms' Webinar module on August 19. On that day, a pro-rated amount for the first five days of usage was charged (whatever the logic is there). Then, on August 23, the charge failed for some reason. One day later, the full amount ($85) for the first month got charged from the card. This was confirmed by the bank. However, Zoom did not recognize that the funds were received and sent me email reminders that we should pay. We had to reach out to their chat agents three times and threaten to cancel the account before they eventually escalated it to the next team level I found. This was on August 29. On August 30, they charge the credit card with $85 again, so we paid now two times (!), and they even sent a thank you email confirming the payment - yet, their invoicing department is still claiming they never received neither of the first nor the second payment I've found. Long story short, from my point of view I do not trust this company anymore and we are looking for alternatives.