Mistreated at Game Pavilion

Game store Pavilion has not replaced the laptop I brought back to them in September 5 2018. They've been trying to pin the blame on me for something I didn't do. They still have my laptop with them 'till now. Someone called me on the 20 of February and said she is from the head office, she just tried to treated me with their lawyers and ask me to have a document on hand that I was given on the counter at the store so I can read it to her. She said she will call me at 9 the next day but she never called.