I've lost fourth gear and had my gearbox bearings replaced a few months ago would that be under warranty just as in having the bearings replaced with Volkswagen caddy aa d now fourth gear is gone is that part and parcel of having the new bearings fitted or is it two separate things

Hi Everyone, Just looking for a bit advice here. We have a 2008 (58) plate Vauxhall Zafira (purchased September last year from a car supermarket) and on the 13th (definitely unlucky for us!) we broke down 100 miles away from home. Not to worry, we had a warranty (or so we thought!) Our car got recovered to a garage where the problem was diagnosed as gearbox failure and the gearbox repair specialist sent his report to the warranty company (which stated that the 'pinion bearing failed and damaged 6th gear and gearbox housing'). The warranty company (the RAC) didn't seem to do anything until I called them who claimed they were waiting for contact details of the gearbox specialist (who had already sent them his report with his contact details on the top!). After I chased this up they eventually decided they were sending an assessor out 3 days later.) The assessor turned up, looked at the car and gearbox, and then the report came back... you guessed it 'wear and tear' and not covered. Now, not only do I expect a gearbox to last longer than 5 years and 79,000 miles, if you google M32 gearbox it will show you how common the boxes are to go - obviously a manufacturing default somewhere along the line, and nothing to do with wear and tear. Not only this I feel completely ripped off by the warranty company, as it appears that any possible problem would come back to wear and tear. I appealed the decision got what looks to be a standard letter back saying they could not overturn the decision. (I think it is a standard letter and the heading does not even get the vehicle's fault correct!). I have appealed this again I am just looking for some basic advice on where I stand with this, and if I have any chance with getting my money back for the repair (we had to have the repair carried out as I need vehicle and it had already been 4 weeks without the car!). The repair cost £1200-£1300. Thanks in advance. Ps. Having done alot of research I found another thread on here regarding requesting documents from vauxhall so I contacted vauxhall and requested the documents, they did originally ask me to take my car to a vauxhall garage however once I said the car was repaired now I just got an email back saying they would not release those documents to the public.