Bad handling of client's property & bad attitude

I had returned my device to the store after it had been damaged after 3 weeks of use. The contractor did the procedure and said it will be booked for repairs. She then said it can't be booked but she will have to take it I should come back after 21 days to collect it. I asked her if I should have a document for this incident, she said no. 21 days later my device cannot be traced on the repairs list. I was advised to come back the next day when the lady I handed it to is available. 22nd day of waiting I went back & she started acting defensive on the matter & told me that I have bad attitude so she won't help me. I was again advised by another contractor to come back the next day to speak with the management and look at the video footage with her to see what had happened to my device after I left it in the store. 23rd day I was still treated with bad attitude from the contractor that I rushed my self to the managements office (after I have seen one client doing so after an encounter with the same contractor). It was then i was helped with understanding what had happened with my device. Problem is I am still waiting for my device, until next Friday. Pleaded the Management.