Ambush upon ambush = harassment?

<p>I have a Vodacom account in terms of which I had made arrangements for the settlement of my contract. Initially Vodacom honoured the arrangement and placed a debit order in my account the first month and thereafter stopped putting a debit order through. The next thing I new I started receiving phone calls from Creditworx. I have tried to explain the issue ad nauseam to the Creditworx people that I am making manual payments every month now to Vodacom and that I am receiving a monthly statement from Vodacom showing that they are receiving my payments. Creditworx staff are phoning my office up to 5 times a day refusing to stop and are leaving messages with co workers for me to phone them back if I am not in the office to take the call! How can this possibly be carrying on???? I am making monthly payments so why are they still phoning me???? I am sick and tired of this and it has to stop.</p>