Acer lost my hard drive after repairing it
It's already been about 11 months since my laptop stopped functioning correctly (Predator Helios 300) and I sent it to Acer for them to repair it. It seems like it was a hard drive issue. They replaced the hard drive with a new one and transferred all the data from the old to the new drive. The problem is, they didn't transfer everything; the data in (:D) was missing, and it contained a lot of very valuable information such as old pictures. They were supposed to send me the laptop back along with the old disk (if they had done that, I would have tried to recover the missing info myself), but they didn't. So, they sent the laptop but kept the old disk. I sent multiple messages asking for the disk back and when they finally replied they said they were "looking for it" (which is obviously untrue).
What else can I do? I really need the missing data back. Did they already destroy the disk or are they obliged to store it?
I waited this long because I was left with no options until I thought about asking this here, 11 months later (this happened around late March). I'm from Spain, just in case it is worth knowing.