McDonald's - Appalling service received

On Friday the 1st July 2022..i visited McDonald's at Springs Mall in Gauteng.. I used the self service option to order my food... My order was processed and the amount for the food was deducted from my account as I was notified by text...however the receipt I got from the self service machine said declined... I went to counter to inform teller of what just happened...And I was told that I have to pay again for my food... I showed the teller the sms notification however that made no difference to him... All he wanted was the amount reflecting on the till... He said I must come back with a bank statement to prove the money went out... Is this how McDonald's staff conduct business and is this the way patrons are treated... To date I have not been refunded nor has anyone followed up on this matter... I will never go back to any McDonald's outlet and I will adise my friends and family of the same... MCDONALD'S, your service is Appalling and the food you prepare and sell is just the same...