Has anyone been having issues with their Mazda CX Manual transmission/gear box?

My Mazda CX 5 has been giving me issues. I am noticing there have been times that my 1st, 2nd , 3rd and 4th gears wouild completely disengage whenever I have them in gear. This usually happens when I hit 2000 rpm.
When I first bought the car from Rick Case Mazda dealership in Duluth Ga. I mentioned that the gears seem a little rough but I was told that is how the car is designed. On ocassions the car would buck as if I was riding a bronco but I had a recall which seemed to resolve the bucking issue. Anyway, the car is now at 80,000 and the car is disengaging more frequently and making a thumpinng noise. I have been told by the dealership I have a warranty. Anyone know what is the cause of the problem and how much will it cost?

 

Ahh, that issue! No need to double post this. Sounds like these are easy symptoms to replicate for a competent dealer. They should be able to sort it out for you.