Pathetic Oxbridge

I have registered in November 2016 for a N4 marketing management . Coming to the exams dates in November 2017 I was not registered to write exams despite having emails stating that I have been . After number of emails I was allowed to write the exams. In January 2018 I emailed Oxbridge asking when the certificate will be ready and I was told it takes months. In mid July 2018 I emailed them again asking what's going on I was told that I need to write two more exams . I was never told about the two exams or was it mentioned in January. I have all emails backing up what I am stating . Poor communication. Poor service. Never again will I ever consider looking at this so called college