Shocked McDonald's customer

Whats the point of having apps and online ordering if the system has glitches? I placed an online order at McDonald's on 22 December at 15h40: to collect it at Midrand. When I arrived, the reception I got from one of the staff members was horrific. I discovered then that they don't accept online orders even though their website allowed me to place the order or collection and went ahead to send a OTP to authorise payment.

I then received a confirmation email around 16h25 to say my order has been received. This was after I've left the province as well.

The next thing I receive a call from the Monavoni branch that there was a delay in placing order from their call centre. The guy who called me saved the day but I can't help wonder just how many other customers does the Midrand branch (cnr church and grand central) mistreat their paying customers, irrespective of how little their order is.

The lady who helped me needs some serious customer service training. The least she could have done was check with their call centre of there received the order.

The whole point of online orders is for convenience and not to be ill-treated by employees...