As a big #Eurovision fan this is extremely annoying. My wife used to be on (ironically) 3 so we'd use her votes. I had forgotten this when she joined me on Smarty recently. So it's now a big issue. I suspect we'll be dropping one of our Smarty plans ...
I have the same problem but with a Nokia X20 which is a newer phone than an X10 so completely ridiculous. I got into it with them when I joined about 3 months ago and what I think they said was they just had to get around to testing it on the network...