Disconnected account

DSTV MULTICHOICE has been disconnecting my account since the 26th of January after I made a payment on the 25th of January. Each time they disconnect my account I call them using my airtime, in this month only this is the 5th time that they disconnected my account. Their reason is that the money that I paid has not been allocated into my account. My question is what's taking so long for the money to be allocated since the 25th of January