Business ProfileforChristian Brothers Automotive

I need your help, please. I dropped off my truck for repairs on April 16th to ***** at Christian Brother's Automotive for a problem with me starting my truck, the ignition lock to be exact. I was contacted by ***** stating that he needed additional time to diagnose the problem when we had discussed what the issue was. I agreed as I needed my vehicle repaired. ***** then called me and stated that the total cost of repairs for the ignition lock and cylinder housing repair would be $523 ($300 for the diagnostic). I asked him to move forward with the repairs. After approving the work/repairs, a few days later I received a call stating that my truck was ready for pick up. Upon arrival on Monday, April 22nd, I was told that the mechanic cant make the repairs and that $300 is due to release/retrieve my truck. Words were exchanged as I was anticipating my vehicle to be repaired. I was especially upset being told that to get my vehicle, I had to pay $300. My family does not have $300 to throw away. The mechanic should have discovered that he wasnt able to make the repairs when he looked at my truck not after $300 of diagnostic fees AND agreeing to make the repairs/fix my truck. One of the pillars of their company is that they focus on integrity. I do not feel that the core values of their company were aligned with this transaction. Im requesting a refund of $300 for diagnostic fees.I have sent multiple messages via the website (under the concern tab) and I have also emailed the owner, ****************** and haven't received any response.