My problem has been a two year issue

My problem has been a two year issue
I have signed up for the maintenance agreement and the last two years it was me that contacted you late in the winter and summer inspection period to make an appointment.
Both times the appointment was made it was then cancelled the day of or the day before because someone else was a priority.
This has caused me to consider another HVAC contractor that may extend the same value of my appointment as they value all the others.
Twice each year I rearranged my time only to have wasted it waiting then being cancelled.Thought you should know.