No response in 2 weeks

I know the Call Centre is under pressure but I have been trying to get hold of you retentions department for over 2 weeks now. I must have called over 12 time son my cellphone and I have posted on the MTN Facebook wall twice and inboxed them and nothing. I am going overseas soon and I need to find out something about my contract URGENTLY which I have said in all my communication. I am really irritated as I have defended MTN to everyone who complains as I have had good service from them the majority of the time.