Bad Business practice

The Pits. Been with them 38 years to long. They cut my internet, (I forgot to pay them for October 2021), sent me a new invoice on 19 September for payment 20th Septenber. No sms or E mail to advise cutting off. Billed me for late payment. Connected back 15th Sept, Could receive E mails, could not send out, 3 hours on the phone, got to send out. 16th Sept. could not receive mails, we could send?? On the phone 4hrs (10210)3 hrs again, no joy, 6 new passwords. Cannot use my outlook? Have to use Telkom Zimbra. The reason for no warning, cut you off, is to encourage Debit order is my logic, however this is bad Business practice and control over Customers to comply on what would be variable payments? They created this by ctting me off, they cannot fix it. Looks like more money to be spent on IT repairs.