ADT clearly doing so well that they don't need my business

I had an appointment with an ADT sales person for Tues 15 Oct. Waited for the sales person, who never turned up and did not phone. Left it a few days anticipating a mail or call. Nothing. On 19th emailed Customer Care Coastal. No response. Makes one wonder 1) Do they actually want to do business? 2) why have a customer care email address with no customer care? and, most worryingly, c) if they can't manage a simple sales call - what else can't they manage?

Tis is a shame as I have dealt with them for many years with no previous complaint.