A friend of mine got married and took photos with a photographer. The photographer didn't save all the recorded videos. What number should I call to tell him?

That photographer is so unprofessional. In a word, marriage is an important event in life. You must record that beautiful and happy moment. You can't make a movie from the beginning. You have to pay for all the expenses and mental damages paid at that time. You must sue to the end and go to the consumer association. You can search a phone number in Baidu and ask how to protect consumer rights.