I work through an online agency (rather not say which) and have done for 5 years. I'm a freelance writer and editor. I have been waiting far too long for them to release my most recent payment and so contacted them via their "chat" service.
The person who spoke to me didn't apologise once...just kept reiterating that the payment would be processed today.
This infuriated me! I wanted an apology frankly and I told her that I felt the customer care was very poor and then stropped off. 
I do feel that an apology is a normal thing to expect. AIBU though? They take a good cut of all my earnings on a monthly basis...in return I expect a good service!