P2P platform like localbitcoins are not responsible for the terms of their users. If you do not like someone's terms then do not deal with them. There are many other buyer/sellers in there, pick one that you like.
if you read what i wrote above properly it clearly says i cancelled the trade with him. and blocked and distrust. you say they are not responsible for the data collected on their website is this correct . can you also explain why this trader was able to leave a negative feedback on my account and he remains at 100% what happened there? ? all this is taking place on local bitcoins website though . or am i missing something here? according to you local bitcoin is not responsible for anything on its website ?