My mazda keep stopping. on 2005 Mazda Mazda3

every 2 to 3 months it starts and drive fine and than it wont start and than about 3 day later it starts and drive for another 2 to 3 months and stop again than 3 days later it starts again I had it tow to firestone and they said it was the starter so they replace it and it ran for 2 to 3 months and stop again please help me

Asked by for the 2005 Mazda Mazda3
poss they have a defective starter also. call and req an insp of there starter poss warranty