Buffering never stops

Buffering never stops, it has been irritating again. I received a call last week from your office asking if the interrupted connection still persist and I answered yet and I was told a follow up call will commence this week to book an appointment to come and check it out, This morning I received a call to confirm that a technician will be coming today and will call me when he is on his way, did he come? NO!. Why is Rain so poor in serving its loyal customer and showing the utmost incompetence as our expense really!...I am getting tired of this now!