Indicator light damged after repairs

I sent my car to have the exhaust replaced at Group 1 Nissan Kuilsriver on the 4 April and when I got home I realized the indicator light on the fender along the drivers side was broken at the clip .I then called the branch to inform them and I was asked to bring the car in on the morning of the 5 April 2016. Veronica checked the car for me and showed me the vehicle checklist where this fault was picked up on the 23 March 2016 when I brought the car in for an assessment initially. <br> 1. No pre- vehicle check was done with me on the 23/03/2016 or on 04 April 2016. I did not sign any of these checklists, as there were no checklist done in my presence, the vehicle was just booked in. <br> 2. The I dropped the vehicle at Group 1 with an intact indicator light <br> 3. If this was fault was picked up on 23/03/2016, why was I not informed at the time.<br> Parts manager, Nigel Smith, offered to replace the part at a reduced rate.Sent email him an email on the 05 to escalate my query, sent another email on the 07April to follow-up due to no response. Called Mr Smith 08 April for feedback and said query was escalated to the Dealer Principle-still no response. Require an urgent response.