you were right about the appt, they were wrong, but becuase you had to ring and check, you have put yourslef in a position where, 'unrightly' the dr has got a bit defensive.
of course, now yu have taken it persoa=nally, becuase, i would, cos i know how easy it is too feel so low and lack confidence.
Are you positive you spoke to the actual person you are going to see?
TBh, if he's like this now, a bit abrupt, maybe he's not theone for you, OR when u call back yuo cuold say,
deep breath ' It was not easy for me to ring back, and have to ask about the appointments, and I thought you were a bit abrupt with me, i was checking, so as not to waste anyone's time.'
what do u think?? u may find they backtrack, and just hadn't realised they were being patronising??