Hint.app is A Scummy Practice (indirectly A Scam) Always Charging More

I used the hint.app web application about a week ago and made a single authorized payment of $0.50 via my Visa card. After this first transaction, several additional charges were taken from my card without my authorization, which makes me feel that I have been scammed. Following the initial $0.50 payment, another $0.50 was charged without my consent. A few days later, an amount of $30 was charged, and then two more separate $0.50 charges were made, all of which I did not authorize. In total, there were multiple unauthorized transactions after the only payment I agreed to, and they were all made through hint.app. I contacted hint.app support and was informed that my refund would be processed, but I have not received any refund or further update since then. This lack of follow‑up has increased my concern and frustration about the situation. I request a full refund of all unauthorized charges made after my first $0.50 authorized payment, the immediate cancellation of any subscription or service linked to my card on hint.app, and the blocking of any future charges to my card from this platform. I expect this situation to be resolved as soon as possible.