Poor customer service

My name is Nomonde Bali contact details ***. I drove to Shell garage in Maboneng at around 17:15 to use the bathroom and unfortunately my gas was low so I decided to fill up, I was assisted by Mathibela filled up for the amount of R300 to my surprise my refill didnt show on my gas reading it still showed empty as it was my 1st time I experienced that I didnt drive off then Mathibela was unable to make me understand what was going on then I requested to speak to the manager on duty was told there was no management on duty and Portia was called to assist me to no help, I then asked that they get hold of the owner/manager on line by the name of Fayaz he told me theres nothing he can do for me he will investigate the next morning mind you im not a joburg person I was just driving pass the area. A guy by the name of Ally got hold of Fayaz who couldnt help and asked Ally to take my details while waiting Ally left me standing inside the with no clue what was going until I saw he takimg down my car reg. What got me frustrated is the lack of communication and lack of accountability I had to wait for 1 hour 15 mins for Mathibela to comeup with a solution to fill my tank with R100 to check for the problem and he came to my rescue because my gas picked. and also would like to thank him for tjat as I was not going to leave without my gas picking up. The Shell garage management will have to apologize to Mathibela for takimg accountability in solving my problem and to re-emborse him his R100 he deserves recognition for his problem solving etiquette. I left that garage irritated and frustrated at 19:00 still to drive to the far end of vaal