If you block someone's number can they call you through withheld?

If you've blocked someone's number on your iPhone if they ring on 141 would they still be able to call you?

Hi Jessica if you've blocked a no. On the phone it will only block that particular no. & if someone witholds a no. Then yes they will still be able to phone you unless of course you've blocked unknown or witheld no.s which on some phones you can do. Hope this info has been of some use to you… Sly