Samsung ADH ****

I handed my wife's Samsung S4 in on Thursday 14 May 2015 for a LCD replacement which is still under warranty. I received an email today from Refilwe Mahlangu with quote for R2310.00. When I handed the phone in I supp**** the proof of purchase from my provider and the phone is covered until August 2015. I requested an explanation from Refilwe but did not receive anything, furthermore I tried to contact your service center and the number just rings. Now firstly why does it take 3 days to respond and why did you send me a quote when the phone is clearly under warranty? I am due for an upgrade and guess what I will not buy any of your products ever again if this is how you treat your customers. I need this phone repaired before the end of the week as you are clearly wasting my time by not responding and trying to get out of the your warranty. If you can't deliver on your warranty then stop offering it, without that I'm sure a lot of people will gladly go with your competition.