Better to find a individual or small group class. there is a teacher near palawatta, if you need send me message I will try to find her number and let you know.
by advice is ACBT is not worth for going or doing the exam,BC have a long waiting list. but get the Library member ship its costly more than 5k, do as much as tests but believe it or not exam is more tougher than Cambridge test books.
if you could manage to get at least 37 in test exams, you may get around 34 for the real exam. so wish you all the best if you need any other help buz me