Glassfit damaged my car when fitting rear window

I submitted 3 quotations from BMW approved panel beaters to Glasfit Brits in September `15 which they requested for the damages caused by their employee when the rear right window fitment was done on my Mini Cooper.Their employee damaged my car,I got an email from their insurance broker on the 04 Nov `15 that they are willing to pay me R4000 final settlement that is not covering the full amount of the cheapest quotations I gave them & I refused the offer.I was told by the broker to take my car for assessment @ Santam centres & when I got there yesterday I was told that I was not supposed to bring my car @ their offices because the claim is with Santam legal department.This morning I got an email from Glasfit`s insurance broker to take my Mini Cooper to a non BMW approved panel beater for another quotations. It is now 2 months they sitting with the quotations,they are still valid and my car is still not fixed. I am so disgruntled by Glasfit for their unsatisfactory service & wasting my time,very bad service indeed.Glasfit does not value their clients at all, no communication from them since I emailed the quotations to their office. Very unhappy client