Cheers before we even started!

I cannot get through on the call center, no email, no online chat! I've been battling for more than 40min this morning! I'm a new customer awaiting installation, Openserve delayed my installation by ANOTHER 3 weeks. I cannot accept this, I wanted to change to Metro Fibre, now I want to cancel my contract before it even started! And there is no place where I can cancel it. Come and fetch your router! we are done!