Intentional ***** by a waiter

A waiter produced a slip that was hand written with an over charged amount . I paid using my card amount of R1230.00 ,to date correct figure has not been produced ,i laid a complaint to Manager Phillip Vermak ,he agreed to fire the waiter but fail to compensate me for this shocking & humiliating experience encountered .Also said will only refund me the difference R500 and some cents which i m not sure where he got it from as no slip was given after payment . he mentioned waiter charged us a bill of R400 and some cents that we were not aware of as tip. What about the resources and time taken to deal with this matter and with no prompt feed-back and lacking of professionalism .I was expecting to be called and not me call and still not be served or treated with urgency . I demand a compensation of R8000 for the poor service and inconvenience caused . This is a priority matter and should have been resolved already if Manger had proper skills to treat customer .