In reality, trusting any corporation is dangerous.
I trust Google more than Apple because they state clearly what they do with your information, with opt in or outs. Apple just says what they may do with your information.
But Samsung pay, Android pay, and Apple pay are some of the most secure ways to make payment. On the S8 there is facial recognition, it's slightly insecure so it cannot be used for Samsung pay. Fingerprints, iris or passwords are required.
Do you not trust Toyota because a few years back they had brake problems? Or when Apple had a data breach on iCloud? Target had credit card info stolen, Samsung pay would have prevented that, and people still use their cards to buy there.
Every year there is a hackers convention, guess what happens every year around that time. Freakout articles about how every phone on the planet is infected. One instance was that Samsung keyboards could give away all your passwords. But none of the mainstream media actually explained how. Had to be on public wifi, your keyboard had to be updating, and a person with malicious intent had to be looking for that specific exploit.
Samsung pay is secure, news articles like this are made to stir up readers, there is no actual information in the article.
Every one of the phones mentioned was out of the owner control and before proper security measures had been taken.
As for the op, try contacting your bank or Samsung.
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