Telkom needs to reimburse me

Horrible service overall,

So I subscribe to the campaign/competition telkom was running called win4dayz in October last year as I enjoyed the daily questions they always asked. Once it ended I then opt out and unsubscribed as it took my airtime , I unsubscribed end of December last year but realized that it continued take my airtime which was 5 rand everyday. Today i contacted the call centre and spoke to an agent named Dino Maalo and she told me that we can only unsubscribe via the call centre. I argued that why mislead people and give an option to unsubscribe themselves and requested my airtime back, she then promised me a manager call back from her supervisor named Nizethu Xomane which was total b.s as on an still awaiting a call back. Worst network and customer service