Transmission Slip Out Of Gear problems of the 2003 Nissan Murano

Feb 13 2008 - took my 2003 Nissan Murano in for recall. Also asked them to check the transmission oil, since the cap says to be checked only by dealer and I've been having the problem of hesitation, while trying to accelerate from a stop. Alternator. The other recall on some sort of protector, was re-scheduled, they had to order parts. He advised that the transmission oil was okay, but will probably need to do an oil change. Feb 27 2008 - parts arrived, dropped off car to do the recall on protector and fix sun visor. Later in the day, I was advised that not all the parts for the recall came in. And the part for the sun visor was a different part. Rescheduled for Mar 12, 2008. I also asked about changing the transmission fluid, he quoted me approx. $150. 00. Agreed to schedule an appointment next time I was in. Mar 1, 2008 - first trip of the day, from a stop at intersection, accelerated to get onto main highway, we go approx 5 feet and the car slips out of gear and unable to go any further. Press the gas pedal and no rev. Called for a tow, and took my Murano to Nissan service. I was advised that no technician available until Monday. Mar 3, 2008 - Monday noon, called Nissan to check on my vehicle. Advised that they were trying to get in touch with Nissan on the mainland for advice on how to fix. The transmission might need to be replaced. They will let me know tomorrow. Mar 4, 2008 - Tuesday noon, called to check on my vehicle. They have yet to get in touch with Nissan on the mainland. They will have more information for me tomorrow. Mar 6, 2008 - the Nissan service supervisor called to advise that my transaxle needs to be replaced for approx. $4485. 00 transaxle, $850. 00 labor. No explanation on what Nissan on the mainland had suggested. He said he would get in touch with them and let me know tomorrow.