New phone chipped back from repairs

I received my contract brand new phone back from repairs for the second time and they said they just did the software but my glass screenprotector was off and my phone got chips there wasnt one mark on it when i booked it in and now its chipped. Vodacom said i must send it in again and they will check it but i wont srnd it in for a third time and then more damaged i am very ****ed with vodacom. I am a contract holder more than 10 years and this is how they send my new phone back. And i had to buy a new protector again. If they did software where is the protector and why is it chiped?