Delivery Guy Cursed Me Out On The Road and Manager

So friday late afternoon at about 4 thereabout, i was headed to midrand from randburg only to enter a dense traffic on kent, right by the spark school, this delivery guy was on his bike behind me, the traffic wasn't moving i used my horn a couple times and a kind lady gave me way to pass by cos there wasn't any car coming, i did realise after i had passed that the traffic was due to the school there. now this guy from nowhere start cussing me out and giving me the middle finger behind me, when i executed the right curve onto bond he came right by me and did same i was quite confused and nearly run my vehicle into the side of the road, i didn't know what i had done to deserve that, moreover i was in my company vehicle and attire so there was no way i was going to misbehave to put the image of my company in disrepute, i followed him to the shop and requested to see the manager, politely i explained to him what happened, to be frank i didn't know what i was expecting, i was still in shock but i certainly did not expect him to brush me off and tell me \oh but he said he didn't curse you out"i was shocked that there and then i said thank you to him and i left. this is a huge disgrace!!"""