That sucks if it is the case. You need to find a way to be anonymous when you buy and sell bitcoins. There is absolutely no point in using anonymous cash in methods if you connect to the exchanger from your real IP address. Buy a private VPS anonymously and connect to it via Tor, then use the VPS for exchanger stuff. Or find an exchanger that doesn't lock accounts that they see proxies connecting to. At the very least use open WiFi from a random location when dealing with them.