I used to work for Sprint (before they fired me too...well laid me off) back when it was only Long Distance, then later when it turned in to the mess it is now. When people asked where I worked, I told them Sprint-but NOT CUSTOMER SERVICE. It was horrible back then and is still as bad now.
I do agree, however, that if you are getting 20-30 calls per month to Customer Service from a single customer, obviously that customer isn't happy. Most likely the only reason they are still there is because you want to charge them several hundred dollars to leave. Sprint said OK, you can go for free...starting now! Besides, what is 1200 customers out of several million? They are making money by losing the customers who cost the most to maintain.
......Laurry