The school is in breach of a CAR if it refuses to pass on your training records:
CARs 1988:
5.57 Flying schools: transfer of student records
If:
(a) a person has received flying training at a flying school; and
(b) the person subsequently arranges to receive flying training at another flying school;
the first‑mentioned flying school must, on the written or oral request of the person or the other flying school, give a copy of the person’s student record to the other flying school.