Delivery fee charged for stock you pick up

I bought a microwave from Joshua Doore, Westonaria yesterday. I was advised by the sales lady of a 5% handling fee that will be charged. I queried this and she explained that this is for in case something goes wrong with the microwave and bring it back to the store, they need to phone for the microwave to be picked up again. I was not happy with 5% being charged for in case something happens(this is also in no adverti*****t. When making the payment the document actually refers to this fee as a delivery fee. I queried it again - why is a handling fee referred to as a delivery fee and surely this can't be for delivery if I'm picking it up myself. At first the sales lady just ignored my question, when I stated that the NCR clearly stipulates that false information is not allowed, she told me to go speak to the manager, which I did. Your manager gave me real bad attitude and initially refused to give me her surname. After I insisted and ask her if she wants me to tell head office that she refused to give me her surname, she gave it and also asked sarcastically:\ Do you want my ID to verify it?."I'm disgusted with the bad attitude and why it took 40 min to finalise a cash purchase."""