Terrible Delayed Service

My vehicle was an attempted theft, discovery insure has not given any feed back regarding the mails I have sent the phone calls iv been told Tarryn my Claims Administrator is too busy to speak to me. Other claims admins promise me feedback but I never get feedback for a simple body work and cooling system repair. I was told a week ago this will be sorted in a day, really I still dont have my vehicle. These people are always confused and never know where my car is or if it has been sorted out both claims are approved but why its taking so long I dont know, since the 28th of December the claim was put in... how ridiculous, then I got a rental vehicle they decided they would not extend after 30 days, but now why is it my problem if they take their sweet time.