Loud Engine Noise problems of the 2008 Toyota RAV4

Was driving on highway when loud sound and vehicle started to reduce speed. Got off at closest off ramp and fortunately made it to firestone. Had to have Rav4 towed to the Toyota dealership I purchased the vehicle from. They checked it over and informed me that the engine was cracked. There was no oil in it. I purchased the vehicle brand new from haley Toyota. Service manager recommended that I contact Toyota corporate. Made the call. They were able to learn from all my service records that I have made sure to always have my car serviced on time. Corporate informed me that they would pay for the engine (a short block), but I would be responsible for the labor and rental car (at a discount) - but still paid out $1,505. 67. On Saturday Dec. 7, 2013 - drove my car less than 2 miles to my job and chugging sound started. No lights or warning came on. Drove home that night - no sounds. Sunday Dec. 8, 2013 drove to work again (less than 2 miles) and this time chugging starts again and this time engine light, vsc light come on. Parked and turned off car. Drove home later that night - no lights this time, but chugging started entering my garage. Monday Dec. 9, 2013 Monday morning had aaa tow vehicle to haley Toyota. Btw - my Rav4 was at 90,200 miles. After an hour plus waiting I was informed (written) "that number 2 coil and spark plug saturated with coolant. Also found oil mixed with coolant. Cylinder head is cracked and needs to be replaced. Aftermarket cylinder head and labor - $2,700" called tues. 12/10/13 to Toyota corp. Called again 12/11/13 to follow up. Was informed "upper management will not approve any assistance". Called and spoke with a Toyota supervisor on Friday - again - was told that Toyota could not do anything to assist me. Was told "its not our problem. There is nothing we can do. ".