Not really an "Enterprise" issue. Traditional enterprise companies will be more than happy to make it easy to take your money, absent occasional silly mistakes

Not really an "Enterprise" issue. Traditional enterprise companies will be more than happy to make it easy to take your money, absent occasional silly mistakes like invoicing the wrong department, or any department instead of a centralized accounts payable finance department. Although the times I saw that happen where I work was because the department making the purchase put their own address on the vendor's billing system when all purchases are supposed to use the centralized accounts payable address. From the thread, this seems more like the problems you get with SaaS when it is run with minimal customer service.