unfair billing charge

Hi<br> I was billed R1447 for January 2015<br> I did my upgrade on the 2nd of January 2015, since I was due on the 1st of January 2015<br> I was charged almost R800 for a clawback revenue and R90 for a migration fee<br> This was never told to me by my sales person, only that a upgrade fee will be charged<br> I want this credited now, as this is unfair on my part<br> I did go from a anytime 200 to a mymtn choice 50, you may see this as a downgrade but it's not<br> My anytime 200 package is no longer available on MTN, so why should I be charged<br> Regards <br>