Phone calls that are 'suss'.

I just had another phone call when the caller failed to identify themselves or their organization, and asked to speak to Susan. This is the bane of my life.
Conversation went something like this:-

Ring, ring, Me:- 'Hullo'
She:-, 'Hullo, could I speak to Susan please?'
Me:- 'Which Susan would that be?'
She:- 'Susan H.'
Me:- Yes, that is me. Who is calling please?
She:- My name is Helen. I am calling about a membership you had with us.
Me:- Who do you represent?
She waffle.
Me:- I am sorry but you have not told me who you represent. What organization are you from?
She:- Oh, I can't tell you that, it is a privacy thing.
Me:- If you can't tell me that, then I can't help you.
She:- There is not need to shout!
I hung up at this juncture.
This call was on my mobile and the number was withheld.
I am soooo sick of people ringing me no matter which phone they call me on, who just ask to speak to Susan. THEY get stroppy when I try to make them tell me the full name of the person they wish to speak to. It is just good manners to aprise the callee who is calling.

Pet Peeve #7 b

As I stated in pet peeve part#7a, I get ticked off when people ring up and want my husband and do not identify themselves, or acknowledge me. The same woman rang again tonight and wanted him. I knew who it was, but asked her who was calling. She is a doctor, and I was just thinking that an undertaker would treat his clients with more courtesy and dignity than this female.
I have had to consult her once and that was once too often
She has no bedside manner, let alone manners to speak of.