Wont book phone in

My dads cellphone just when dead when he wanted to plug the charger in three months ago. we took it to a place in port alfred who could not assist as the phone was under warranty. It did not want to come on again. i bought the phone for him on 3dec 2016. i took it to greenacres as i only got it back from him on the night of 2dec and took it in on Sunday 3dec.edgars now phoned me and says the phone was only booked in on the 4th which is out of warrant y.unacceptable as i did explain and booked it in at edgars on 3rd