Sure you can spoof MAC's but most people won't, so it's an easy solution that works for most incidents. No telling why you are getting banned over and over, but

Sure you can spoof MAC's but most people won't, so it's an easy solution that works for most incidents. No telling why you are getting banned over and over, but if it's for a legitimate reason that you're unaware of you're certainly not going to be getting much understanding by the time an ops person has had to figure out what's going on and manually turn off the port.