MTN IS A HEADACHE 😤😤😡

MTN is such a headache 😫🤦🤦🤦 Yesterday I bought 240 all network minutes, and I had around about R150 airtime remaining. I made a few calls only to find out that MTN decided to take from my airtime and not minutes. Today I phoned their call centre, Mapule just told me that "she is sorry" but she can't assist me with anything their system is down.... I requested a call back once the system is up, she said she can't promise me that I will get a call back..... So in this case what must I do?😤😤

I once had similar problem with Vodacom but my encounter and outcomes with their agent was totally different. I even wrote a positive review about it, unlike what I'm currently facing 😡😡