BRAND NEW SAMSUNG M4 - FAULTY

My husband went to Vodacom to buy a new Samsung M4. That same night tells me the little icon showing the charge is not viewed on the phone.. I said to him, dont worry too much this is a new phone, you will figure it out. 2-3 days later, he insists his phone is not charging. I tell him to go take it back immediately. Vodacom manager says they have to send the phone in. HE JUST BOUGHT THE ****** PHONE, its not second hand, its a first hand phone. If I was there I would have told them to stick the phone so far up their A or threw it at them. This is false advertising, what happened to the customer comes first. He goes to collect the phone as mentioned 3 days later, they tell him they dont have the phone he must wait 2-3 weeks! what in the ****** hell! This is not fair and considering this is a brand new phone out of the box, My husband should have immediately received a brand new phone on the spot. That is what customer service is all about. The fact that they dont follow up with him, he has to go there everytime is far worse. can someone help me get my husband a new phone or his phone back in tip top condition? best part, he has to pay for the sim swaps etc. what a disgrace!!!!!!