Engine Belts And Pulleys problems of the 2013 Subaru Impreza

Mikes garage in goshen did my inspection in oct. Inspecting my car he let me know I needed a serpentine belt because it was cracked and would most likely last 3 months. On Nov 29th I drove home from chester and the car broke down. On Nov 30th I towed it to the mechanic and I rented a car. He told me it was the belt issue and I needed an oil change. Car was ready for pickup on 12/3. On 12/8 the car broke down in middletown and it was towed to Subaru. On 12/10 Subaru told me that the car diagnosis was a blown engine due to no oil. If I wanted to have it completely checked they would charge 1000 to take it apart and properly diagnosis it. I gave them the ok to do so. On 12/17 I went to mikes garage and showed him the estimate from Subaru and asked him what was going to be done on his part. He said he had cameras to see the proper oil change and what was supposed to be reliable for my engine since he did what was supposed to be done. He told me about the recall on my car and that I should look into it. Week of the 17th of December I called Subaru and a case was opened for me. She called me back on December 27th her name was ms. Quinn and said they couldn't do anything for me because I had taken it to this outside mechanic. They offered me a 500 coupon towards a brand new car. Lol! the first week of Jan I reached out to Subaru again to speak to a mgr. After reviewing the case and reaching out to Subaru he stated that he could not assist because the engine had failed due to no oil per Subaru. He also stated that the recalled part was not broken in my Subaru. At this point I had already spoken to mike who stated he had an engine for me to place in car for 500. I gave him the ok out of desperation. Mike in goshen called Feb 1st to let me know car was done we picked it up on Saturday the 9th and on Tuesday the 12th the car had leaking fluids and currently is not drive-able.