Impossible to speak to my SP???

I have been battling to get hold of the call center for weeks now just to do my upgrade. Guess I should just wait for the last month to finish and use a different network provider. If I do not get in the queue for 30 minutes and eventually drop the call myself, I get into the queue and just get cut after 2 minutes of holding. This is terrible and a disgrace, If you do not want business any longer, just put out a add saying we are closing our doors go elsewhere.