Unacceptable charges when you want to move and stay with the ISP

I am moving and I want to stay with my ISP and that is Home-Connect, the new area is covered by home connect. I have been told that I have to cancel my current Fibre line and then reply with the new address, but now there is a cancellation fee applies. Now why is it that I get charged extra for wanting to stay with the ISP. i am not happy with responses like "Unfortunately there will be a cancellation fee applicable, However we will cover for your installation and activation costs at your new address." i have already said that they have lost a client. it is unfortuanate that i have praisted home connect to other users and now i have no faith with home-connect and i have no shame in telling these same users.