Paid extra R1545 instead of R300

We were booked for a photo shoot On the 22 Feb 2015,and we were told by e-mail that we must pay R300 for everything before we come for shoot.Before we pay the money we confirmed that R300 is the only amount of money that we are going to pay .they confirmed that via the e-mail.On the day of the shoot we were not assisted with anything ,the photographer was just taking pictures all the place,when we finished we were taken to another secret room only to be told we need to pay R1545 on top of the R300 we paid or else we are not getting any pictures.We paid the money because we were traumatized by the experience and the kids were tired so that we can leave.To our shock when we got home the pictures were so horrible unedited not what they have shown us on the studio.