Bad attitude i was not expecting as a customer

I went to Midas around cresta in the afternoon around 14:15 to buy couple of items as always, got a great service from the guys as always expected, i realise they had second hand batteries that they normally sell there, i waited for someone to Finnish and come assist and i didn't mind coz i saw that the guys were busy. finally one guy came to assist (white guy). i asked him the price and everything, after 3 minutes then came Collen i don't know whether he is the manager or what, told me to stop touching his staff or he will throw me out honestly i was very shocked, i took a deep breath and asked him what is he talking about coz i am a customer i have the right infact some one is busy assisting me. he told me people are *****ing for him which means i am one of them. we had a long quarrel customers we also amazed whats happening and i got so much furious and returned everything i bought took my money back.told him i will lay a complain he told to go ahead with confidence that he doesn't care. i need this matter to be really dealt with coz i don't think i will never ever give them business ever. and i will make s**** no one i know will ever go there.