I paid R450 on the 7th instead of our agreed R220 monthly payment agreement. But receiving calls and sms

Hi there,

On the 7th of September, I paid R450 on my TFG ACCOUNT, to my surprise I’m being told today that I urgently need to pay R220? How is that possible when my initial payment agreement was R220 and I paid R450 instead?? now I’m receiving so many calls on the 14th? Kindly please fix your mess because every call and sms is being charged into my account..