Phone numer field only numbers

How can i change that in phone field i can add only numbers no special characters like dash ( – ) no spaces etc. just numbers. And those numbers will be max 9 not less not more.

Now i have [tel* z-telefon class:wpcf7-numbers-only minlength:9 maxlength:9 placeholder “Numer telefonu*”]

But i can add numbers like

21 13213

21-212-1

So space and – can be added. I dont want this.