Did not use card and get charged

I called the call center on the 22/12/2015 16:15 16:20 the line opens and the person remains silent on the phone, I would like the call to be pulled and give the name of the person and a reason why they take the call and remain silent, I would like a manager to call me back regarding this, also, I recently got a credit card and did not use it - I called the call center for help but instead of helping they just remain silent on the phone, I would like to know why I am I am being charged for a card that is not in use???