Laptop not working from day 1

I bought an Acer laptop about a year ago. It has been used 3 times, because it is actually unusable. It is slow, the task manager says the hard drive is running at 100% all the time even when nothing is actually running. I brought it in to be fixed, and it was fixed, for 1 whole day. Now the laptop wont turn on because it says it has no Bootable device found. I paid R6000 for a laptop that is not working. And all I get is it is fixed when it isnt. When will you give me my money back? This is unacceptable that Incredible Connection doesnt bother with customers, as long as they made their money, who cares right? Contact me asap so that you can give me a full refund, then I will take my business elsewhere.