Agent cannot be compelled to do acts authorized without principal's consent

In an agent-principal relationship, the personality of the principal is extended through the facility of the agent. In so doing, the agent, by legal fiction, becomes the principal, authorized to perform all acts which the latter would have him do. Such a relationship can only be effected with the consent of the principal, which must not, in any way, be compelled by law or by any court. (G.R. No. 76931. May 29, 1991)