All right, so here's what I have gathered. You are using Globe Telecomms as your ISP, is this correct? Or is it "Philippine Long Distance Telephone"? Your neighbor is using, as it appears, "Smart Broadband." Well, back in December, a hacker got onto one of Smart Broadband's IPs and tainted it. From now on, anyone who uses Smart Broadband as their ISP may have the unlucky chance at ending up on that ISP, for which they will be perma banned. This happened to you. Here's my suggestion: Never, ever, ever attempt to use your neighbor's ISP again, even if you are experiencing connectivity issues. You may end up right back onto that IP. You actually got very close to it when you reconnected after being banned. Your IP ended in .94 instead of .90 (the tainted IP). This suggests to me the very high probability you will end up right back on that bad IP.
So, here's what going to happen. We have checked everything out, and we do not believe you are related to the original hacker. As such, I am unbanning your steam ID. However, the original banned IP is still banned in our system and will remain that way. Continue to use only the Globe Telecomms IPs you are receiving, but please do not use your neighbor's Smart Broadband service. Thanks!