Unhappy Customer

Ive contacted ADT to change my debit order details months ago and this has still not been done. Every month it gets debited from an old account and now that account will be overdrawn due to the debit order still set on the old account. I also feel like im paying way too much for the terrible service im getting from ADT.... my alarm goes off and the operator cannot even tell me which zone tripped. I need to be contacted ASAP.