BAD customer service

I contacted the technical department and booked a technician. I notified the call centre agent that I will only be available from 13h30 and before this time please do not call me as I will be in a meeting and unable to take calls. <br> <br> On the day for the booking I was called and a technician was at my property between 12h00 and 13h00 when I was not available. When I called the technical department they were very unhelpful they refuse to help me unless I agree to pay an after hour call out rate for a technician. Further to this I was advised by ADT that I had lighting cover yet the technician said he knew nothing about this and needs to charge me. I have made numerous calls to discuss this matter. left ,messages for the technical manager Gerome Everett to call me 3 days ago I am still waiting. I left a message for the accounts manager Sherry Hunter to call me I am still waiting. I made numerous calls to the call centre but no help. <br> <br> further to the above issues I received via email another customers ADT billing statement and when I called the call centre about this I was advised to ignore the statement. no attempt was made to investigate the matter.