Two missed appointments

I made arrangements more than a month ago for my line to be transferred to my new residence. I received confirmation of an all-day appointment on Friday 11 December to install/activate a telephone line at my new residence. No technician arrived on this day. I phoned on Monday to find out what happened and received an SMS confirming a new appointment for Tuesday 15 December. No technician arrived on this day either. I can't accept bad service and no communication to keep me updated when I am a paying customer, no matter how large your company is.