Worse service Ever

no one answers the phones and emails and no one guides you on wwhat sections will be of importnace for exams ,non feedback I have been asking for prrevious exam papers and study all the books given but none of the information comes in on exams ,they give 2015 /206 /2017 papers can Intec please professionalise this educational institution,we need all the help we can get to pass the examss ,and tutors also dont reply on questions asked