Unprofessional & Bad Customer Service

In an attempt to cancel my expired contract with Vodacom I was assisted by a consultant by the name of Mondli who refused to provide me with his surname. He said he was based in Midrand. He gave me the following reference 1- ********** ********** . This man was very rude and unprofessional, he failed to provide me with a proper reason as to why I would still need to pay my contract after the cancellation. He laughed straight to my ear which I didn’t appreciate at all and was very arrogant in his delivery on the phone. I consider this very very bad customer service as I also had to stay on the phone for 40 minutes and my issue was still not resolved.