will i be deported?

hi. am a student in the uk. am enrolled in college for 2 semesters on a student visa. i paid for only 1 semester. and i don’t want to join in for the 2nd semester. but my college is asking me to join in or enroll to another college and show them my enrollment letter. otherwise they’ll inform the home office. will i be deported if they inform office. and if am deported, will they send officers to my place?