Real Estate Council of Ontario (888-296-8755). Among other things, this organization enforces codes of conduct for all registered agents and brokers in the province. If the issue of basement leaks had been mentioned during negotiations, but your agent didn’t include any written assurances in the contract, then there may be something that can be done in your favour. That said, it’s a sad situation indeed when people like the previous owners so easily turn their back on basic honesty, all to make a quicker sale at a higher price. Laws and courts and arbitration boards are a very poor substitute for integrity.