Have got same experience with Haier. Bought AC 6 years ago. Refrigerant was low on new AC got it topped up used for a few days and went outstation for job and didnt used it in that season. In the next season gas was again zero. Got it checked from a really nice technician who checked the leakage by first vac-cumming the circuit. Came to know that there was a leak in pipe from the bent going inside the compressor.
Used for a few days and then again went outstation to my work place. then after 3 years, out of which it was used for just 30 days at max, heat and cool switching valve went mad. For no reason AC started to switch to heat mode in the middle of night.
Now in this season i have thrown it out and bought a new Kenwood AC.
Should have bought an imported brand like Panasonic, Bosch, or a Hitachi but was seriously short of cash.