Visa Validity If I Canceled My Language School Enrolment

I have decided not to attend this term, mostly due to finding a place to stay nearby the place of study. I’ve entered with a six months visitor visa, which was done for the purposes of studying. They’ve agreed to cancel my enrolment into the class and to join at a future time.

Now my question is - is my visa still valid? I can’t find any specific rules for this - what happens if you get the visa but after that, you decide not to go anymore.

Anyone faced this?

Thank you.