beyond dissapointing service

Called the contact centre 8 times, was given the technical support number ********** 555 only to be cut off each time I was trf, none of the c/serv consulted asked or tried to find out why the calls are getting cut off, I was asked the same stupid question 8 times and got nothing out of it except wasting an hour of my time. I've been a customer for over 12yrs, I wonder why I still subject myself to mediocre service.