Mtn cheating customers on loyalty airtime

I recently converted my loyalty points to airtime. I thought I could use it to buy data or minutes but that value just comes off my normal mtn credit. the loyalty airtime (rand value) still stays the same. Mtn responded to another user in 2016 that this rand value is only for mtn to mtn calls. If so then why is it that my mtn to mtn calls just come my anytime minutes. Why give this option if customers can't use it the way they see fit. I.e. buy data, sms or airtime. The selection menu and the standard terms and conditions don't mention anything about mtn to mtn minutes. Loyalty points menu gives you options for airtime, data and sms only

Stop misleading your customers. I have been a loyal customer with mtn for 20 years and with a current monthly spend of about R1200 on 2 mtn contract numbers. This month I converted loyalty points for R133 airtime which I cant do anything with. It expires in August (3months) Seriously thinking about changing myservice provider when my contracts expire (after 20 years) I have paid more than R100000 to mtn over that time. what about your other loyal customers who fork out even more than me. Come on mtn play fair