Ace Air Complex review: Air conditioning system

We hired a guy for putting air conditioning to our place he came for the things after the day he put on system it was not working properly this is 2nd July 2023, then i called him he came after 2 days fixed and the system after the week went down,

From 12th July i and my house people trying to call these people and they are not picking the call and ready to repair.

But according to bill and conditions it is mentioned that service is included in the cost.

Still he is giving hard time to us.

Please help