Nedbank poor customer service

I had the most horrible experience dealing with Nedbank. I bought R200 airtime on the 25th October 2018 , but to date have not received my airtime. I have made numerous calls to their call center, but have been sent from pillar to post. It has cost me over R 100 to make these calls. I have been talking to Myron Jacobs, Mpumi Zungu and Portia, none of which could help. This is unprofessional and I demand my money wasted on all of thi.