Takealot bad service and arrogant staff

Today at about -11am I called at Takealot Warehouse Cape Town to collect an item purchased via their app .The item was a Sandisk Cruser Blade Usb Flash Drive Upon approaching the collections assistant i was requested whether i was collecting on behalf of someone else. I informed the assistant that the item was purchased by myself and paid for via eft from my banking account .I even showed him a screenshot taken from their app indicating the order number and that item was ready for collection..At this point the assistant became arrogant and demanded the email address that was used to order the item.I showed him the screenshot again containing the order number as well as the fact that the item was ready for collection .He aggressively informed me that he was not interested in the screenshot.He also indicated that this was not my account as it indicated that this item was purchased by a Mzwandile.I again informed him hat i had presented my drivers licence which confirmed my identity He again inquired what email was used to order item.I refused to give my email addressed as I felt it was unneccessary to provide same.I had purchased many items from Takealot in the past and had never ever been.requested to furnish them with an email address.At this point he was s******ing and laughing and asking continuosly whyi did not have the email address.I.can just mention that my login details were at home.I then demanded my item which i had purchased which the agent refused to hand over.Tbis person embarased and humiliated me in front of other customers as the collections area was quite full at that stage I was made to feel like i was being dishonest and that I was trying to collect someone elses item.The assistant then told me to leave as he was not going to hand over my item.At no stage was his supervisor called.After I had taken a photograph of the assistant , he then left to go to the back and didnt return to the desk again.I then left to fetch my login details.Upon me returning with the login details, i confronted him and demanded my item.This assistant just laughed continuosly .He then fetched my item .I then logged in to their app via my cell phone and showed him that this item was ordered under my profile(name and surname) I had in fact ordered another item which was delivered to my residence and for which i had signed personally under the same profile .Their app indicated that "Ferdinand" had signed for that item.At no stage did the assistant apologise or explain what had gone wrong .At no stage did he call the supervisor to came and explain what had transpired.He was still arrogant and did not apologise for any inconvenience that I may have suffered as of their actions. I then asked him to call his supervisor and was given a **** and bull story by the supervisor that the picker had picked the wrong clients item.Coinidently the item that was mistakenly picked was the exact same item I had purchased.Again no apology was offered by the supervisor.In fact the assistant tried to blame me for the mishap because I had not furnished him with the email address used to order my item.I dont understand how Tahealot could have made such a mistake.Upon arriving at Takealot to collect an item purchased online ,your are requested to login with your name , telephone number and the order number .I had also shown the collections assistant the screenshot from their app which contained the order number.I am deeply unhappy with the treatment I had received from the Takealot staff.