ADSL Service cut without fiber installed

I app**** to have my line upgraded to a fiber line from a adsl line, I was told to put the cancellation date in for two months from application. Now I have been cut off, with no fiber installed, being told by a very agetated desk help that he cant reactivate my acc, I need to reapply for a new service that will take two to three weeks. He refuses to put me thru to a more senior person,. How can you cut a service before the new one is installed, my wife's business is run from home and they just dont care, unhelpfull and no care attetude. All they need to do is reactivate acc, and I already paid for this month too!!!