Filling up Tank with air

Went to fill up my car at the Total garage in Transfer Soshanguve. I asked the Patrol attendant to fill up my car by R50 as it was above reserve. After he did the patrol gauge was exactly as it was before he filled the patrol, and told me it will move as I drive and left me standing there. I called another attendant to put R50 again same story happened and the gauge never moved again and told me the same thing will move as I drive. Drove 3km home. The following day I drove less than 20km my Patrol was finished/reserve had to put R100 at Engine garage then my gauge showed that I have put patrol before I can drive. Called the garage spoke to a lady by the name of Dikeledi who promised to call me back neved did, asked manager Moses cell number told him my story promised to call back never did as well.