Just wondering what people think about this?

I rang my dentist, as I'd made an online appointment and they rang me back to pay a deposit for it,( not sure why the don't have the facility to pay that online) ... The receptionist rang to tell me this, but I was in the car and didn't have my card number to hand, so I said I'd call her back, which I did... She answers the call and is clearly talking to me on speakerphone and she's clearly not even in the jurisdiction of the phone as she can't hear me and thought I was someone called Nicole..

Do you think this is rude for a business receptionist to answer customer calls on speakerphone?

Oh yeah and when she originally called me, she had me on speakerphone then too