“It is settled law that if a master did not complain and appeared to be satisfied with a servant’s conduct, that complaint cannot be a ground for dismissal on a subsequent occasion. See Smith v. Allen 176 Eng. Rep. 73, and in the case Beattie v. Farmenter (1888-89) 5 T.L.R. 396 Lord Esher, M.R. said as follows- “As to irregularities, the defendant could not rely on them in as much as, after full knowledge of them, he continued the plaintiff in his service.”