Lenovo A6000-I Remaining times is 0, cannot unlock

I encountered this error, even with the original carrier sim it cannot be used anymore.

I tried unlocking it using sigmakey but it is unsupported phone.

Is there another way to reset the counter? so that I can use the original carrier sim it is locked to?

Is it possible that the sigmakey caused the 0 attempts while trying to unlock it? There was a original carrier sim inside when I tried to unlocked it.

Is it one of the cause?

Please I need your inputs.

Thank you!