System error disappointment

I purchased 2 coffee machines via Makro online on Thursday. Received a order number but never received a payment notification from my bank. Called Makro online support and they said they can see I made a payment so I must just be patient for it to be allocated. By Saturday, still no payment notification so I called Makro again only to be told they had had a system error and therefore I lose out on my order and I should re-order. Except that the items are sold out now so I don’t have that option. Terribly disappointed in Makro. Client gets penalized for their error. Will not recommend or support them further