SOCIAL SECURITY BANK LTD. v. AGYAKWA Estoppel—Conduct, by—Scope of principle—Loan granted by defendants to plaintiff to enable him clear imported goods—Goods kept by defendants in their warehouse as security for loan—Part of consignment of goods damaged by flood caused by rain while in custody of defendants—Fact of damage to part of consignment known to both plaintiff and defendants—Plaintiff paying loan in full—Plaintiff on taking delivery signing waybill presented by defendants acknowledging goods to be in good condition before release of goods to him—Plaintiff subsequently examining goods fully and finding substantial part of consignment damaged by flood—Action by plaintiff for, inter alia, damages for loss of goods through negligence of defendants—Claim by defendants that they assumed from conduct of plaintiff in signing waybill that he would not put in any claim for damages for loss of goods and consequently they did not take inventory to ascertain extent of damage—Whether plaintiff estopped in circumstances from claiming damages for loss of goods—Principle of estoppel by conduct to be applicable only in circumstances where it is just to invoke it.