I’ve lost my tax receipt, how do I obtain a new one? Knowledge Network Help April 21, 2018 23:12 Updated Please contact us by phone, email or mail and we’ll send you a duplicate. Related articles Will I get a Canadian charitable tax receipt for my donation? I am Knowledge Partner, do I automatically have an account on knowledge.ca? How can I donate to Knowledge Network? What information we track and why What channels are Knowledge Network on?