Manipulating Quotations for OUTsurance or Manipulating Quotations for extra cash??

I took my car to AutoExec to get an estimate on the damage for my vehicle and received an estimate of around R25k to have my vehicle repaired. I was happy to accept this quote and take my vehicle to be repaired but I needed the quotation approved by my insurance who I was claiming from as a third party claim thus the Estiamte had been sent to me and further sent to OUTsurance who refused to pay this amount for the repairs. (Please keep in mind that we actually took the vehicle to the AutoExec premises in Kempton Park where one of their panel beaters had a look at the car and sent us the R25k estimate. As opposed to OUTsurance who assessed my vehicle through photographs)

We did not mention at first, to AutoExec that we will be claiming as third party from OUTsurance who initially gave me a ridiculous quote of around R8k to have my vehicle repaired thus we received the hefty but seeminly reasonable R25k quote. Upon mentioning to them that I will be fixing my vehicle with a third party claim through OUTsurance and them conspiring a "new assessment", the quotation drastically dropped from R25k to R14k to have my vehicle repaired. The exact same vehicle with the exact same damages.

So it's safe to say that if I had not been covered by OUTsurance or if this was not a claim I would have been charged roughly R10K more than the "actual cost of the damages"??

Is this how AutoExec treat customers who do not have insurance? Is this the immoral company that OUTsurance trusts to send their clients to?

Who is not to be trusted here??