Humour where needed

I had a phonecall recently from someone who was wanting a donation for a cancer related institute and I felt quite sorry for her. I usually hate these sort of phone calls but I let her talk on for a bit. I told her that the work she was doing was really worthwhile as I was just getting over BC and I was about to say yes to the donation but I was interrupted when she piped up with "Oh good, you will certainly be giving a donation then won't you". I then told her that I didn't think 'good' was the word she should use for my situation and that she should not presume that I would give a donation just because I had experience with cancer and that she'd just lost my donation and I hung up the phone. I was really mad at first but then I saw the funny side and laughed out loud. I imagine she'll be really careful with her calls in the future. Janey xxx