Renew-it Sandton lost my property inside the car

My car was taken to Renew-it Sandton in November 2015 for repair. At the time of collecting my vehicle, I noticed that the rubber mattress for my vehicle were missing. Upon enquiry, it appears that they have lost my mattresses. The service manager indicated that they shall replace my mattress by buying another set from the dealership.<br> <br> It has been approximately 3 months since this incident. I have made numerous calls and sent emails to them wanting to find out the progress of this. I have not had a response thus far, despite several of their staff having promised to come back to me. <br> <br> I find that they are very irresponsible for their action. I believe that if they lost a client's property (which they admitted having done so) they should compensate the client by replacing the client's lost property.<br>