iphone 6 repairs

Good day<br> On 25 November 2015 i took my iphone 6 to Ifix at Ilanga mall in Nelspruit to have my cracked screen repaired.<br> When I collected my phone ,I paid R2299.00 for the repairs.After inspecting the phone ,I found that the fitment of the screen was not properly done.I pointed it out to the staff that the screen was moving on corners when I press on the screen,but they said it is due to a small dent on the outside corner of the phone casing but I should take it and if the screen lifts up I should bring it back and they will fix it. Last week wednesday while I was busy taking stock the bottom part of the screen started lifting up ,I put my phone on the table together with the clipboard that i was using unfortunately the clipboard touched the bottom corner of the phone where the screen was not in place and the screen cracked. On Sunday the 3rd of April I took the phone back to Ifix ,they told me that they would fixed it but the screen is cracked and they will only fix it when I pay the full repairs amount R2299.00 . This would not have happened if the job was done right the first time<br>