Objecting to a once a day, relatively short call is definitely unreasonable. On the other extreme, if every time you are not being entertained, you pick up the phone, it would be annoying to most hosts. In my mind, one, maybe twice a day is fine, more than that is too much. I would include lengthy text conversations or multiple email in that too.
If you think you were in the 1-2 calls per day category, I'd say to friend, I want to bring something up from last time. You were upset when I made multiple phone calls, but I don't remember making more than one or two a day, how do we resolve this ahead of time so it doesn't come up again. If she says that you made two each day and that was too much, you need to assert that the number seems reasonable to you. If she remembers it more as 10 a day, then you need to discuss with her why you have such a different memory about it.