Mr Williams said: "They should be ashamed of themselves." He urged existing ScottishPower customers to switch companies and prospective customers to boycott the company, which is a subsidiary of Iberdrola based in the Basque region of Spain. Gwynedd council leader Dyfed Edwards said: "If you were a large company and you wanted to establish a Welsh language call centre wouldn't you set it up in Caernarfon, where 90% of the people speak Welsh? This isn't a battle for better wages or working conditions but a fight to keep jobs in Caernarfon and a battle for the Welsh language." Cymdeithas yr Iaith (Welsh Language Society's) Menna Machreth urged customers and protesters to "unmercilessly" write and e-mail ScottishPower opposing the closure plans. Former Friction Dynamics union official Gerald Parry said: "What's behind all of this is greed for more profits."