The commissioner shall permit companies, having on deposit with him stocks or bonds as security, to collect the dividends or interest accruing on such deposits, delivering to their authorized agents, respectively, the coupons or other evidences of interest as the same become due; but upon default by any company to deposit additional security as called for by the commissioner, or pending any proceedings to close up or enjoin it, the commissioner shall collect the dividends and interest as they become due and add the same to the securities in his hands belonging to such company.