Vodacom will penalise you for their mistake and leave you with damaged goods

So, Vodacom... I have always been a happy client of Vodacom up until the current experience I have had. My IPhones microphone was faulty so I handed in my phone a day before the warranty expired, this was the 21st of Dec. The vodashop where I handed it in closed for the festive season and could only send my phone in on the 2nd of Jan, a week later the phone was returned as the Find my IPhone was not deactivated (No one told me it should have been deactivated) Its currently the 29th, Vodacom is blatantly refusing to fix the phone because the find my IPhone was still active and since the warranty has expired. My argument point is that, I as the customer was not aware of the requirement for the find my IPhone to be deactivated, no one told me. So now I am penalized for the mistake of Vodacom and their lack of informing the customer of what needed to be done.

Why was my phone not fixed and the matter handled internally? What kind of a business are they running.

I find this completely outrageous, I did hand in the phone before the warranty has expired and have been without a phone that I am paying for more than a month.

Day light ******* if you ask me.