Can I block a number on my Huawei P9 so I can't call this number anymore?

Unfortunately I dial the number of my ex too often because I can't let go of him. Can I block his number so I can't call him anymore?

Do not ask why so why.

Please only answer if there's a possibility.

No you can't but you can block her that she can't call you anymore. Delete the number but I'm sorry that I have responded despite but only wanted to help.

I have a Huawei P8 Lite 2017 and I can put numbers on blacklists. I'm notified, they have called me, but I'm recognized as unavailable. Hopefully, you too. You should find this feature in your phone manager

You can block his number so that he can't call you but you can delete his number and all the calls you made, they disappear completely