*****ing from customers

This morning I went to put in R200 93 petrol at the caltex on 2nd street in springs in my courtesy car I just collected. I was in a hurry as i was already late and was not paying attention also had a man distract me by walking up to my window asking questions I'm guessing that this is all planned and how they manage to ***** from people anyway she walked up to my window I gave her the money and left however when I got on the highway (only a few kms away) the petrol light came on now please tell me how this is possible if the full R200 was put in my car! I would like u to check the cameras discipline the staff that stole from me and I would like to be refunded my R200! Also I have been trying to call the garage all day and no answer!