Poor Service

Good day. I took my Samsung Grand Neo phone for repairs as it had a cracked Screen. Knowing that the phone was still under the 1 year free screen repair warranty. The phone was taken on the 12th August 2015 and after 2 weeks with no feedback I had to call and find out the progress. I was told the phone was sent to Smartcare in Durban. I was promised to be called and kept updated about the progress but I was the one who constantly called the centre. I was then told that the phones warranty had been previously used therefore I must ay for the repairs. When I disputed this I was told they will investigate and get back to me but they never did. When I called they said my phone now had water damage and I must pay to fix the mother board. This was a shock as my phone was working well it was just the cracked screen that was an issue. I am really disappointed in how this was handled as well as the service I received. Today its the 14th September and my phone is still not fixed.