what i suggest u is to try for engg here,
dont believe the words of consultants,
give a last try ,
i have seen the admission requirements ,they are asking for 'Grade 12 Mathematics for College Technology (MCT4C) or Grade 11 Functions (MCF3M) or Grade 11 Functions and Relations (MCR3U) or any Grade 12 (U) Mathematics'
u scored good in your mathematics,
they clearly rejected u on 10th marks(this is for sure)
apply for offer letter of a 3year advanced diploma course or 4year bachelors degree.
as u have paid fee to sheridan u can ask them to keep the fee and give out a offer letter for 3 year course.(u need to pay extra fee bcoz u paid fee for only 2year course)
or else u can ask for the fee u paid by sending them a email with ur rejection letter