Poor Service from Outsurance

I had an accident claim a short while back which was repaired at Galliga auto in Midrand. Due to the very poor service,excessive time and poor quality of the repair I had escalated this as complaint that was handled by Milton. The car had to be taken back after I had initially received it due to several quality issues. The paint on the new bumper has now started to crack and bubble in several places. I called outsurance on the morning of 27 October 2015 to report this issue and was told that I must speak to Milton as he had initially handled this query. He was busy so a request was logged for him to call me back. My call was only returned at around 5:30 Pm the same day. I was on my way home I could not take the call. I called back again the next morning at at 8:33 am was put through to Milton whose line was busy and again a message was logged for him to call me back. Received a call back again that afternoon after 4:30 which I could not take. I called again the next morning and the number just rings. Does Outsurance have only one person working there who can handle this case who is always unavailable? How can I get this reported and dealt with within normal business hours??