Bad service complaint

Good day Hope this email finds you well i just want to lay a formal complaint against on of your staff members at Shell Honeydew her name is Pela i went to the garage to refil my car and asked her to also check my water level and tyre pressure she then added water in my car however she filled the water tank beyond maximum to a point that my car started heating up as i was driving dueto no air flow as the water was too much I then went there the next day to make her aware of the incident just so she does not do it to other people howere when i spoke to her she was beyond rude tellin me im crazy she did not fill my car beyond maximum point her attitude was just unacceptable I won't lie she did not show any sign of acknowledgement and kept on telling me i must not say she damaged my car because she did not so i looked like a clown to her and she made feel very stupid even her facial expression was just beyond rude I'm very irate and would like to see action being taken against that employer as I work with customers daily and I respect my job to a point that even when the customer is at fault I will acknowledge their complaint and apologize and then educate the customer. i feel this women does not respect her job and that creates a very bad name for your company please call me on *** im happy to answer any questions you might have regarding the incident i'm beyond disappointed with her attitude and im even questioning the training you provide to your employees