very poor when its come to finalised claim

The car accident occurred in December 2014, and it was just one vehicle involved ,it is written off and the investigation was completed in January but a person who is handling my claim does not care about her job,its seems like she is new in claims department or is the way she been tought by Prime Meridian Direct to play hide and seek with the clients. I have been contacting her almot after every two days but she keep on telling that she will come back to me, when I call her ,she keeps on telling that she will priotise my claim and send it for a reviewing by supervisor, two weeks back she told me that ,the system has change, all the claims are sent straight to the insurer. I am very dissapointment about poor service I am getting from Kesley Harrison. When I try to contact claim department supervisor , I am always told that she/he is in the meeting, they will pass the messege to him/her to contact me back , I have asked for a supervisor severaly times but still no feedback. I do not think a claim finalisation of one vehicle involved can take three months to be sorted out/ finalised and the decission can take these long.