Keep getting phone calls, even though I repeatedly...

Keep getting phone calls, even though I repeatedly request they remove my number, or at least they should follow federal requirements that they check the "do not call" list first. Tried to find out information on OFCP, as they claim to be a charity, however there is no information in the CRA charity listings database for OFCP. If they are a charity as they claim, they should have a registration number, and make their financial statements available, which is a federal requirement. There seems to be a perceived aura of "shadyiness" concerning OFCP, due to the difficulty (impossible?) nature of determining operating information.