Poor, poor service

Completely messed up my application and got something as simple as an address incorrect. I took off work to be present at the property to have the dual line installed on the property only to be told that they sent the installers the incorrect address and that they cannot change the address on the system instantly. This puzzled me. Further to this, I was called and told that there is an existing line already installed on my premises which i had already CONFIRMED was the case. I had sent two emails to the operations team during my application process informing them that I am in a granny cottage on the property and asked if a dual line is possible to which they said YES. When i got called today, they had no idea that that was my request and then said that a whole new application would need to be logged for the property. Lets not forget the fact that the address, which I selected on the application form online and reinforced on email was suddenly "incorrect". I have sent in a request to cancel my application and I am awaiting written confirmation that it has been cancelled. Very, very disappointed.