Here's a new ISP moneylosing scam and I can vouch firsthand that it is in use in Australia.
Step 1: Sell a broadband service to a customer then install the connection on their premises and take their money for a couple of years.
Step 2: When the customer calls with a technical question about the connection and/or hardware provided by that ISP then tell them that those kind of calls are considered 'Premium Support' and need to be answered by a Third Party service provider who will regretfully need to charge the customer an additional service fee just to provide information about the work done by that ISP.
Step 3: Respond politely but uselessly to every email from the incredulous customer. Use terms like 'sincerely regret for any inconvenience or frustration that you may have experienced...' and '...We are not a software/hardware support company...' and '...falls outside our support boundaries.'
Step 4: Refuse to engage in any meaningful conversation such as "What do you want to achieve?" or "How can we help you?" that might have convinced the customer to upgrade their service with that ISP.
Step 5: Watch the customer spend ten minutes to download and use a freeware software tool to obtain the information anyway, thus showing how little work was involved in answering the original question.
Step 6: Watch the customer change their ISP.
I did get mad but now I'm getting even.