I think, car's battery has grown weak, and probably, some of its cells have gone dead (if there is some "Kar Kar" noise, car takes ignition but not get started).
Please get the battery checked from some good electrician, with the help of voltmeter / multimeter, to get to the exact picture.
In Engine OFF position, Voltmeter reading should be 12V / slightly more, across its terminals. This is the sign of good and healthy battery. If its less than 12V, then battery is weak.
In the mean time, try jump starting your car with some other battery. If car starts, then most probably, issue is with your battery.
(I faced similar issue in my Vitz, and ultimate solution was replacement of battery with new one)
