Bad Service during contract upgrade

I went to Vodacom Tzaneen Mall to upgrade my cellphone contract. I chose a Samsung Galaxy s8 +. The lady that helped me by the name of Cecilia said to me it only comes in 2 colours which are marple gold and space grey. I asked for gold she did the upgrade which took more than an hour after she finished I decided to open the phone at the store so I could transfer contacts from my old phone to the new phone. Only to find out that marple gold looks like a very light grey colour, I asked her if I could take space grey instead because I though marple gold is a normal gold colour. Cecilia got upset and told me now she's going to have to pay for things she doesn't know, she refunded me the R150.00 I had paid for the upgrade and took the phone and the entire documentation away and left me. She left me puzzled at the counter and started packing boxes of pouches. I asked a different person to assist me because it seemed as though she wasn't interested anymore and was upset. The guy that stepped up took my details and said he'd order the colour that I want and give me a call on Wednesday, he also told me the phone actually comes in 5 colours not 2. Honestly speaking she doesn't belong there; she became too personal! For what??? maybe Vodacom needs to do some screening of potential hires to find personalities best suited for customer interaction or better equip their employees to answer our questions. We don't want to deal with this kind of attitude please FIX it.