That depends on how the ban is made. If it’s based on ip address, you probably can get a new ip from your isp. On the other hand, if they have banned your username, it can be a lot harder…
If the specific profile has been banned (like in your case) you’ll need to access the server database and manually remove the filtration upon your profile. Else rather if you are IP banned you can always use VPNs, proxies, TOR, tunneling etc.