sent my acer t312 chrome book for warrantee repair, this was my 2 time as the prior time it was returned not fixed, i spoke to someone there on 5/2 and was told that the computer had been returned and signed for on 4/27, i never received the unit and never signed for it, my apt is off the lobby and no building employees received nor signed for it, i request an investigation and as this is a large building, nothing has ever been stolen, cameras, bldg employees, HELP, i want my computer returned, thank you !