Terrible service - Accounts

It has come to my attention that I am getting double charged and invoiced for internet services on my account of which I am not aware of. Currently I only use a single internet modem and connection. I have sent numerous emails for accounts to assist and no one has even contacted me to assist. I am now trying to apply for a home loan and now this is a red flag on my name!!

I was also not billed for a few months. I then received a draft summons which does not make any sense to me, as far as I understand my monthly payments should be paid by debit order which seems to be a problem.