Not willing to repair their own refurbished device

Ref CLC***<br> <br> My iphone 5s has been on a restarting loop with a blue screen. I have taken in to Cell C Blue Route for repairs. After various follow up queries I was told that the quote of R5200 to repair still stands as the phone has been with me for 5 months and Cell C doesn't know what I did with the device during this time. According to the technician, there was an unauthorized repair done on the device.<br> <br> I would like to urgently bring to Cell C's attention that this iphone was advertised as refurbished when I initiated the contract in November 2015, I have never opened it nor sent it to anybody else for repairs. The moment I noticed the blue screen and continuous restarting was the same day that I sent it in for repairs!<br> <br> I would like to know which technician handled the phone during it's original refurbishment and during this repair inspection, I would like to know the procedures followed and what proof these technicians have that they refurbished this phone correctly. Once again I stress that there was no unauthorized repair done on my side and I am not going to accept any charges for this as it was only ever handled by Cell C! <br> <br> Poor service by Cell C! Very unprofessional!