la sunset tans unauthorized charge on my credit card stroudsburg, Pennsylvania

I called La Sunset Tans and spoke to Joey to book a appt. for a single spray tan.  He told me that he would have to have my credit card number and charge it $50 for the tan and appt.  I agreed.  I went there May 31 2012 and recieved my spray tan and when I went to the front desk he handed me a charge sliup, charging my credit card $1500.00.  I told Joey no way am I paying for this, I only wanted a single tan, he told me we only do 20 tan pkgs. and got very angry with me saying how I wasted his time so and so on.  I left the store and called my credit card co. which is now in dispute.