No WiFi because of inefficient process from Metrofibre

I decided to change my ISP from Cool ideas to Metrofibre. The process of ordering was swift and easy. I ordered on Friday. I was told that installation will happen on Monday. I was even more excited to see how quick everything was going. Monday came, the Vumatel gents connected the ONT(which was already connected since I was using fibre anyway). I was told the router will be delivered to me. So now I’m left stranded with no wifi at my house. In fact, since I already had the black box I was under the impression that they will be installing and reconfiguring a new router since it’s all under Vumatel. I reached out to them as to when I should expect the router as I’m now disconnected. I was told the router will come only on Wednesday. That means almost 72 hours of no connection! Why was the ONT set up without the router? Or at least set up when the router is ready to be delivered? I’m currently paying for wifi I cannot use from my old ISP because metrofibre reconfigured my black box for a router that is to be delivered two days later? To what seemed like an efficient and seamless transition to a new ISP, I’m basically left stranded with no WiFi and no one can really fast track this delivery.