First off, I have worked in call centres, and have indeed had worse jobs. Now I don't even have a job, so I don't think I am better than the call centre staff or anything like that.
But, AIBU to really get irritated when call centre staff (and others, although IRL people don't really tend to need to call you by your name) call me by my first name, without even asking?
To me, if I saw the name "Senseof Entitlement" I would call the person Ms Entitlement, unless there was a specific title (Miss, Mrs, Dr, etc), in which case I would use that. If we got into a conversation, I might say "Do you mind if I call you Senseof?" but I certainly wouldn't just do it.
If someone asks if they can use my first name, I always say yes, but it is just polite to ask.
Obviously, if I write or speak to them first, and sign off with my first name, that is fine, and people in more informal settings/youth situations are different - ie I am involved with the youth section of a political organisation, and don't mind being called by my first name as everyone does it.
I just think that, in a customer situation, people should err on the side of politeness. Especially with things like banking, tax etc - where you need to trust in the professionalism of the organisation.
The same with medical staff, actually. I am sick of doctors doing that patronising smile at me and talking to me like a child. CHILDREN get first name in formal situations, adults get title surname until the adult says it is ok to use first name. If I went around calling doctors by their first name I would get called disrespectful - why can't I get the same courtesy?
AIBU?