I wouldn't have even gone as far as you did, but more out of annoyance with callers rather than data privacy.  Though I probably wouldn't have given my info either!

Though its possible she had to churn through a lot of calls and wanted quantity over quality.

Roger,

This is very common, especially free-holiday scam, where they take your credit card dtls and put a charge on it. They usually say that you have been given 2 nights free holiday and in order to reserve this we need to charge your credit card for $1.

So - No you are not too paranoid, this is common practice :)

Thanks