Poor Installation-Failure to deliver

I have had an extremely unpleasant experience with a Standard Bank building insurance supplier that replaced my garage door after a break in at my house. I had to take a total of 3 days leave because the garage door was not installed properly the first time. To add insult to injury, I had to had to deal with their supplier not honouring the appointments (after I submitted leave from work in order to be home because I was told that they dont work on Saturdays). I have been inconvenienced for 3 weeks and my garage door is still not operational. The installer took my garage motor battery on Saturday in order to supply me with a charged battery for the motor to work. The supplier has still not pitched up to return my battery. I am frustrated and tired of constantly phoning this supplier and phoning Standard Bank is no use either. All they do is try to contact this supplier. I also informed Standard Bank that they damaged the new garage door when they were struggling to fix their poor installation. The garage door is now scratched, dented and the rubber at the bottom is broken. The rails were also installed poorly and untidy holes were drilled in the sides of the rails in order for the garage door to lock. I have been in contact with Standard Bank Insurance every step of the way and informed them of the poor service I have experienced. They have not been helpful at all. 3 weeks later and after all the problems that I have experienced, I am now told that I must obtain quotes for the door that is now damaged and submit it to them. Why is this now my responsibility after their supplier messed up? This is not the first time that I am disappointed by the outcome of a claim. I would definately not reccomend Standard Bank to anyone and I think its time that I take my business elsewhere.