So I received a love to shop voucher for £150 - I’ve spent some of it. I went to use it in M & S and I wasn’t able to because I didn’t know the exact balance left on it. I tried scanning the QR code to get the balance but that didn’t work. Anyway I only live a 2 minute walk away went home and scanned the code there . Got the balance - back to M & S and told them the balance. All good - there wasn’t enough on the card to cover the cost of my goods. This time the said I couldn’t pay the balance using my debit card . I asked to see someone else - they were adamant this was right. I lost the will to live and walked out. Has anyone else been asked for a balance on a gift card? Can anyone shed some light ?