The studio didn't send me an enhanced photo within the specified time, and there was no follow-up after repeated urging. What should I do?

A few questions. First, the photos should not have been given to you, because the customers are your sisters; Second, please contact the store to urge; If there is no result, or it is still delayed, please find out the contract and complain to 123 15 according to the contract. If the contract doesn't stipulate the time to give the film, please ask someone else to do sales consultation and record it, and get what you said: "The normal process in the store is to give the original film first, then refine the electronic version of the photo and send it to your personal mailbox within one and a half months." The store promised to collect evidence, and then sought 123 15 to defend rights.