Stopped connecting to WiFi now won’t work at all

Hi- on 3rd of March my ring doorbell 2nd gen stopped connecting to my WiFi - been trying to reconnect ever since it wouldn’t do it . Now it appears the whole unit has stopped working as wont light up or anything . Yes have charged it. Keep calling the helpline number but can’t get through just get a message saying it has not been possible to connect your call .... any advice out there??