Office Depot review: My service regarding my flash drive

I went to the Office Max on the Strip in Canton Ohio. one of the self-serve copiers wasn't working. A Lady came to help me, and she was leaving for the day but still helped. I was in a hurry, so she still had my flash drive. I called the next day, and the gentleman said he had it and it was in the lost and found. I asked him to put my name on an envelope, but he said it would be there whenever I came to get it. I came back about 5 days later and they couldn't find it. I gave them my cel number and I never heard from anyone. today I spoke to a manager who said they throw them away after 15 days, I told her I came back 5 days later, and they couldn't find it then. I had very important information on it. She said Oh there's nothing she could do about it so I hung up the phone. she could have at least offered me another flash drive so I could try and find all the information that they now threw away after only 5 days of it being there, but nothing. Will I here from any of you, or will you just ignore me like the manager did?