Telkom is useless

I bought a data bundle in May 2015 and May 2016 (12gb 1x12months R499. Did not use it between Jun and Nov 2017 and bought again on 12 Dec 2017 via the app. On 23 Jan cancelled my line because it was not used for 6 months. They did not prevent me from buying it. Battleling since 17 Feb to sort this out. Case no ( ********** 3 and ********** 9). I was at the Irene store today (3 Apr) and Telkom can't help me. Data sim ********** was allocated to somebody else on 24/03/18. What about my gigs that I could not use since 23/03/18. The 12gb -12 months should only expire 12/12/18.