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’ve lost my tax receipt, how can I get a new one? How can I donate to Knowledge Network? Is Knowledge Network available on Roku? I'm experiencing technical issues streaming video on Knowledge.ca. What can I do?