The Worst Customer Service Ever

I am utterly disappointed with the service I got from McDonalds Rosebank and their Customer Care/Client Service. I logged my complaint on their rating site on the 31st of May about my order and the Service I had when I phoned their restaurant after buying through the Drive Thru. I had to call them on Monday to find out what is going and still I did not get assistance. Had to phone them again and only the Restaurant Manager Nthabiseng only called me but still no resolution. Just her going back and forth with me. The same thing happened with Mbulayeni who is the 2nd in charge when I phoned. Who was very rude. Nthabiseng was still going to speak to her Superior and to this day I have not heard from her, after Our call cut and she did not even phone me back as I posed questions she was not able to answer. All this bad service merely because My Jalapeno Double had Onions for the 1st time ever in years I have been buying this. This was such a small matter that could have been easily resolved but because McDonald's and their So called Managers do not take us as customers serious and are not valued.