Worst Makro customer service !!!

I was gifted a phone for my birthday and as anyone excitedly would do when given a gift, I opened the box to inspect the phone. I then realised that the gifted phone is very similar to the phone I have currently and ultimately it would be a waste of money to keep the new one. I was well within the 7 day return period, only to go to Makro in Amanzintoti branch and have the rude sales person and his manager ( who was very very rude) tell me that I cannot return the phone because the box was opened. They did not care that the phone was not used. Nowhere in their policy online did they notify us about the return policy on phones! The manager blantanly said its our fault for not listening to the verbal 'policy' that the sales person gives the client when they purchase a phone. And said my boyfriend should have known better as to what phone to buy me, as if that is the professional way to speak to a client! The manager was ABSOLUTELY rude. As a long time and loyal customer to Makro my boyfriend and I left the store frustrated and upset. Makro needs to clearly state its policy in writing and not rely on verbal communication for such important policies. They also need to train their staff better! If zero was an option for rating, I would gladly give it to them!