Incompetent Security Company 
The ADT Sales department is absolutely clueless:
- Quote was incorrect at first.
- I have been ignored numerous times.
- Sales person did not have adequate technical knowledge.
- Technical team didn't know what they were supposed to install due to a incorrect job card from sales.
- Tax invoice does not match up with the quote.
- I'm being black mailed with late payment penalties, however ADT cannot provide me with a correct tax invoice. 

This is disappointing and will not do business with ADT ever again.   