W. Va. Code § 33-4-13
(b)
(1) Any of the following acts in this state, effected by mail or otherwise, by an unlicensed foreign or alien insurer:
(3) Service of process in any such action, suit or proceeding shall in addition to the manner provided in subdivision (2) of this subsection (b) be valid if served upon any person within this state who, in this state on behalf of such insurer, is
(c)
(1) Before any unauthorized or unlicensed foreign or alien insurer shall file or cause to be filed any pleading in any action, suit or proceeding instituted against it, or any notice, order, pleading or process in an administrative proceeding before the commissioner instituted against such insurer, such unauthorized or unlicensed insurer shall either: