No communication from Acer regarding repairs

My laptop went into Acer earlier this year for the screen to be fixed. While there, the video card was somehow damaged as it was working perfectly before the repairs but would no longer work after them. I sent the laptop back in for repairs for the video card on 24/10/2017. I was told it would take a week to fix. I phoned in after a week and was told that there has been an issue activating windows, which has delayed the process. I have no problem with this as I understand that unforeseen issues can arise, but I am disappointed in the lack of communication from Acer. I have to keep phoning in to ask what is happening. I was promised a call back the other day before 5pm which never happened, leading to me needing to phone in again the next day. I get told I'll be sent an email regarding the repairs but no email was sent. I am in desperate need of my laptop as I need it for my studies and have no replacement and am not impressed that I have to constantly follow up on what is happening with it when I keep being told that I will be phoned back or emailed regarding it.

Please give me a time frame and a proper update regarding this. Ticket ID: ********** S