Disgusting Service & Empty Promises

I've been a loyal Makro client for a few years now and I'm disappointed and disgusted with the service I've received thus far. I have a Makro credit card and the account was paid up on the 18 May 2018 and I requested the account to be closed with the closures department (RCS) on the same day but to date nothing has been done. I constantly have to call in and hold for more than 10 minutes on some occasions to speak to a consultant and repeat myself all the time is so frustrating. Can someone please just close my damn account and get everything over with, it's been more than a month now and I'm fed up with the endless empty promises.