False marketing

I'm extremely fedup with McDonald's Ladysmith due to false marketing...I requested to order the nazo meal at the drive thru around 17h42.The lady on speaker advised that they no longer offer the nazo meals & told me they have cheese burger meals for R50 and I confirmed with her if she meant the nazo meal that has foldover as this is still available for ordering on the app and online.So i just ordered the 2 cheese burgers.When i went to the collection window,I noticed my slip stated the order was 2 double cheese burgers and the lady on the collection window requested for my slip and kept it with her.I only realised when i drove off that my slip wasn't returned.I'm frustrated and disgusted as this is the 2nd time where I order the nazo meal and told it's no longer on offer and an extra cheese added without my consent and pick this on my slip the last time too and i requested for refund as i was charged extra due to staff who add extra food items as they want to push and meet thd stores sales targets.I demand an explanation from their head office ,why the lady who assisted me **** about the nazo meal being no longer on offer,and sold me something to boost her sales targets!This is McDonald's Ladysmith KZN