Very poor service

I app**** for a contract online a week before last week and on Monday last week I received a call from their agent by the name of Sameera Chetty and we are agreed on the documents I was suppose to email him of which I did that the very following day, it took him two days for him to get back to me and that was after I sent about 3 emails, and he was telling me that he could not view the documents in the format I sent them and he advised how I should send them, ever since I've them in the pdf format it keeps notifying me that the email could not be sent because the recipient's email is full of which I've made him aware of and that seemed to be falling to a deaf ear because I haven't received any response from him and I even asked him to refer me to someone who can assist me since he seems to be struggling to help me, even that was not responded to, I've tried to make a number of calls to their call center with no success and all they can tell me is that the status for the application is pending.......