Cannot get refund paid

I am not sure about the value of reviewing Nespresso seeing as they do not respond and seem completely uninterested in the negative comments. We have been trying for over a month to get refunds for 2 orders mistakenly made on their app. As others have experienced, the 'customer care' call centre is useless and simply say they will take it up with finance, and nothing happens. I am very disappointed with the way Nespresso seems to be deteriorating (as we have had positive experiences in the past).