Phone is not turning on

Sir, My phone was in good condition. Suddenly it turned off after that I tried several times to switch it on, but it did'nt. I gave charge for around many hours but still it does not works!! I gave it to a local repair shop, they told me the circuit has been shorted. Then I visited Mi service center, they told that they can't do anything as the parts of this phone is not available. Please do something!!!!