Once when I had my BKK debit card swallowed by an ATM, I went inside the bank to report. The front desk told me the branch did not have the key, the teller made a copy of my ID, which he showed to the ATM maintenance crew when they came two days later. The crew retrieved my card and let the branch held it until I came to pick it up.
I don't have any debit cards from any Thai bank anymore, not worth the fees and hassle,You never know when it will be rejected. Now I am carrying a BKK credit card, with QR scan payment everywhere and cardless cash withdrawal, I am using my card less and less often.