Poor customer service from management

I sent my business proposal to mall of africa in January and was never responded too. After doing some back and forth with whoever that is in charge of their facebook account I was given an email address to communicate with. That as well didnt go well because I had to constantly check on why my emails are not being responded too. At one point i had to drive to mall of africa and went to customer service desk on 5th floor and was advised to stop emailing and rather give them a call of which he gave me a business card. After a whole 1 and half month (in march) of waiting I had to send an email again to remind them that I am still waiting for a response from them I am now being told your business proposal is not part of our marketing strategy. I am really disappointed honestly with the type of service I received.