Credit card or prepaid card — JPMORGAN CHASE & CO. (TX)

Unexpected increase in interest rate. I have a Chase Sapphire Preferred Credit Card. This month of XX/XX/XXXX, I was charged {$100.00} for interest and on the XX/XX/XXXX I owe {$150.00} for my minimun payment. This is unreasonable. These charges are too high and they keep increasing every month with no notice.