Glad I am cancelling my accounts with Telkom after 17 years. Pathetic service levels

I have been a business and residential customer of Telkom for over 17 years. Unfortunately I have had terrible service during that time but due to the limited options stuck with them. Now that fibre has been rolled out I am switching to VOIP with Vox Telecom . I went in to a Telkom store on the 25 August 2017 to cancel my residential line. I had an 8ta number linked to my account in the form of a Telkom mix package which entitled me to airtime monthly. I had accumulated in excess of R1200 of airtime. I requested to keep my mobile number and made mention of the airtime to the consultant. I was told that I needed to be given a prepaid sim card as the number would switch to prepaid but that I wouldn't lose my airtime. To my dismay when I inserted the new sim card I found that there was a zero balance. Upon enquiring with the Telkom mobile department I was told that because I switched to prepaid I have lost the airtime. No further assistance other than asking me to go back to the store could be given. I am in the process of getting a new service for my business so that I can cancel my business line too. I can't wait to be rid of Telkom!