Cancelled my contract and lost my airtime

I called in to cancel my prepaid contract, this was a seamless process and I was able to get help with that. However, the agent helping me failed to advise me that I would lose my airtime and all the points accumulated. I am disheartened as I lost over R200 of airtime which I could have spent on something else. I find it unfair that I did not get an opportunity to use my airtime.

Please correct this.