failure to deliver on agreement - free telkom to telkom airtime minutes

I took out a Telkom mobile contract in 2017. Did not receive the agreed to 3000 free minutes during December 2017, and again in January 2017. Called them on 1 Jan 2018... told to wait 72 hours.... after 72 hours, called again to escalate... was told that the tat is 72 business hours... called yesterday, was told to wait 21 days... told consultant to escalate again... poor attitude...they just don't care. I am ready to cancel this arrangement