Samsung 2 replacement screen for S4 ****

We took the S4 into the above branch to have a cracked screen repaired as according to Samsung tge phone is guarentee for 2 years and 2 replacement screens. On taking the phone into the branch for a screen replacement we were given a quote of 4k for screen replacement and ' water damage' bearing in mind that the phone was absolutely fine working perfectly other than the cracked screen. <br> On telling them there is no ways we can afford this tge halved the price saying we will only have to pay the lower of the 2 amounts and that the 'water damage part' which was the higher cost will be dropped and we 'only have to pay for the screen replacement. <br> When they were told don't repair tge phone at all only replace the screen they still went ahead and according to them repaired the phone and screen and wanted the difference of the money paid in. When we said undo the repairs and just do the screen as per the guarentee we were told no they will undo everything and give us the phone back as it was when we handed it in broken screen and all as they cannot do half a job !!! Since when does a company have the right to not fulfill their guarentee promises but to go ahead and do repairs not asked 4