Customer service is extremely unprofessional. Call...

Customer service is extremely unprofessional. Called to talk to someone regarding a letter I received and got transferred to Faith. When I told her I didn't understand something she said she grew increasingly rude, and had an attitude for some reason. I even had to tell her dont talk to me that way. I mean Im the customer! I have multiple accounts with them for my business and I cant believe how unprofessional and the lack of customer appreciation Faith (the person I talked to) had! Services are good, nothing to complain about there but noone should ever talk to a customer the way I just got talked to!