Disappointed to say the least

I am very disappointed in the service I got from this company I placed a month 2 month mtn lte order on mtn website I paid the pro rated amount last night I even have proof but mondo says tey don't see any application under my name then I spoke both of an agent who says they see my application as pre-approved but they don't see the payment I made and she wil escalate it I even email in screenshots proof the payment I made of R399 and the ref I got was RCO544432 and then the agent did give me a new ref of something she did log RCO544480 and said it can take up to 72 hours to get feedback I think this is unacceptable how come ask for a payment up front on.mtn online application on the MTN website but then the payment doesn't get allocated I was also told that I got a new billing number allocated for the month-to-month product because my old contract was canceled years ago