I have not heard of these companies, but whenever you find unauthorized charges on a credit account, you must report it to the credit card company as soon as possible. You can dispute the charges, and ask them to investigate them. Once you have officially reported it (Usually in writing) , the credit card company cannot bill you or charge interest on the charges until they are resolved.
Try to gather all the info you can about these incorrect charges and the company who is charging them. If you need to communicate, do it in writing, and save everything so you can refer to it later if necessary.