I wasn't quite sure what they were looking for.

I've not a clue who this might be.

Considering the previous remarks I saw, I opted not to respond, especially since the caller failed to leave any voicemail.

When I was quizzed about my most recent eye examination — apparently they’re connected to the NHS — I mentioned that I get my eyes checked quite often. Politely, I asked them not to ring me again and promptly blocked the number. I can sort out an eye test on my own, thank you very much!