Here's my experience with them:
A friend bought a cheap Asus laptop, which I offered to upgrade for him as a bday gift (ssd), and stupid me broke the ribbon cable that attaches the keyboard to the laptop (you take the keyboard off in this model to get to the inside). Phoning Evetech to see if they can sell me a new one to fix the machine, they couldn't help, and just pointed me to Rectron.
Next, another friend of mine bought an upgrade kit recently (i5 with mobo and RAM). The CPU didn't want to work on the motherboard, it needed a bios upgrade first. Ended up costing him more money. Evetech offered to fix it though, but he just went with local guys who charged him like R300. My friend did say they apologized profusely though...
I bought a 4TB Seagate hard drive, which was dead on arrival. The packaging it was in was really not sturdy enough, literally just some bubble wrap. They did replace it though, but it was a hassle. I had to fill in a form and scan and email it to them, and it took two weeks. They sent their courier to come fetch it, tested it, phoned me with an update, sent a new one.
I bought 2 or 3 other times from them without issue, but yeah, percentage-wise not a good track record...