Cheated and ******, distasteful business practice

I have never been so angry with a company as i am at the moment. I am the proud owner of a Xperia Z3, I have been a Sony fan for years now. I have also been with Vodacom for nearly 10 years. I have had my Xperia Z3 since late Feb this year, and recently decided to carry out a software update which I was repeatedly reminded of by my device. After doing this update, my device went into a \boot loop""; and booked in for repairs. It was initially funny to see how the exterior inspection was more thorough; then my self perceived helpfulness recollecting the events leading up to the failure; but nevertheless. 2 Weeks on;i am told the device is \""Beyond Economical Repair\"""