All I need is an invoice - ADT!

This is a complaint about the admin part of ADT not the security with whom I have no issues.

We have a business acount wit ADT for our office building. For going on almost 4 years now I have to request statments and invouces every month, some months we will get them after requesting them and but most months we will not.

I have phoned, emailed, screamed shouted and threatened not to pay until we get our invoices and statments but ADT does not care. They will continue to take money off via debit order with no invoice or statments to backup the costs deducted from our account.

I am at my end now with this and hence my post here in some hope that somebody in the backoffice at ADT with some form of ability to help me will read this.