Waiter Bukhosi having a bad attitude

Hi,<br> <br> I went out for Lunch with my sisters at Piatto Nelson Mandela Square, Sandton. The waiter Bukhosi was rude, and had an attitude problem. What annoyed me the most was when we paid for our bill and gave him the tip he deserved. He rudely said he doesn't want it. He is use to getting 10% tip. As far as I know tips are based on what the customer wants to give you depending on the service you provide unless or otherwise it is stated on the bill slip. Bukhosi is very disrespectful.