Automatic Transmission problems of the 2000 Acura CL

In October 2007, I began to have problems with my 2000 Acura 3. 2tl. The car jerked when I put it in reverse and as it changed gears it started shaking. I had it checked during an oil change that month and was told it was ok. The problem continued an din November I took it in to mcdaniels Acura in columbia, SC. I was told there was a recall on the transmissions and that the recall expired due to vehicle mileage. I informed the general manager I did not receive recall information. After contacting the Acura corporation, I was informed since I was not the original owner, I did not receive the information. I am the registered owner and information was not sent to me. Now, I am facing $4000 in repairs on a vehicle I am still paying on.

Car started to delay between shifting. After being in 5th gear at highway speed (about 55 mph) car down shifted to 2nd gear. Pulled over. Car had recently been serviced for recall of transmission. Mechanic says need new transmission. Cannot identify problem.