We are waiting for Openserve to provide feedback - 2 weeks later, same response

I have received the worst service ever from Supersonic. I placed an order with them in Feb - to this day, I am waiting for installation. I keep getting the same feedback, "they are waiting for feedback from Openserve" or someone tried to call me and I did not pick up. I am not sure if I must always be by my phone waiting for them to call me, I work, I have meetings - if you don't get ahold of me then you try again.

If this is how they treat people coming in how will they treat me as a customer? The start is 1 coz I am not allowed to provide zero stars