Vodacom horrible customer service 82

I have a router internet contract with vodacom. When i signed up for this contract the payment method was a debit order. Vodacom has not been debiting me on my account, almost every month i have to call vodacom to make arrangements to pay and reconnect my services and i get confirmation that debit order will go off. Debit order never goes off, which inconvenience me and my income. My services have since been disconnected due to vodacom's failure to deduct. I found myself calling them the whole day today after they promised to call me back to resolve the query until my number was blocked by vodacom. They refuse me to lodge a complaint, they refuse to have their managers details, they refuse to provide a reference number. I was on call with a consultant named Mishka who told me that Zethu would call me back.