Car battery swapped & no help from insurance

Accident happened on the 31 Jan 2016,I claimed through discovery.they approved my claim and booked my car with eljoney body repairs.my car took 31 days in for repairs whenever I call to ask how far they were with my car Elsabe the manager kept on delaying Dates until 31 days .i complained to my insurance on the 02 mar 16 no feedback on that but I got my car on the 03 mar 16.on the 4 mar my car cranked and the car never started,I was jump started and I thought maybe the car will be fine in the next days because it took 31 days in the panel beaters but it kept on doing the same and it seem it's forever wanting to be push start or jump started.i called and spoke to elsabe in Eljoney who said I should get the battery checked.i took the car to battery centre today,I was told the battery is dead it needs to be replaced,I then called elsabe again.she said they not responsible for the dead battery I have to take it up with my insurance. I never had a battery problem until my main battery was removed ( my tracker confirmed removal of battery on 02 mar) that was when Eljoney was assembling confirmed by elsabe.i think my battery was swapped with another one and my insurance is not helpin