Bad customer service

Good day My husband received a contract sim cards yesterday and today I tried to assit him to activate the sim cards to no available. he is currently not working and I was calling MTN call centre on his behalf to activate but I could not get any help as they promised to call him back to no available till now we still waiting for the call centre to call him back.What a bad customer service we received from MTN.What we do now kindly assist so disappointed with the service we received today. Sim card:*** Sim card:***