thank you for the replies. the car does feel somewhat weird when changing gears. i've driven a few cars before and the only time i felt gears pick up or being changed this way was in a manual gearbox car. when accelerating you can feel the upshifts quite a lot and i do agree with your point that the gearbox may not be fully disengaging, another thing that seemed very weird just two days ago, when i decided to go for a cruise with it, the minute i started it up and took the first corner in the car park, the car was vibrating as if it was in reverse which lends me to believe that the problem is not just with the reverse gears, from the looks of it, it looks more and more like a gear box rebuild may be required. however what is the most interesting thing is that the car does not vibrate as much after being driven for a while. I havent had the time to take it to a mechanic but the moment i do i will inform you all of what i find just in case someone else has the same issue.
thank you for your support