Cannot get my contract cancelled with vodacom

I am trying to cancel my contract with Vodacom and I have received (once again) very poor service. I have now waited 5 days for someone to assist me. There is no reference number that I can use. I have to explain the situation every single time I phone and promises arer made that cannot be kept. Since the first day I have gone to Telkom I have received great service. Everything was done via email and I only had to go in store to collect my device. Thank you TELKOM for caring about your customers.