Stop with threatening sms's

I have a R1000 credit limit on my credit card (I placed the low R1000 limit) so mostly I leave my credit card on a positive balance and sometimes I will go into my R1000 credit. I have spoken to FNB to stop sending these condescending threatening sms's to pay my outstanding amount when its not even a few days into the R1000 credit, this I need to do immediately to avoid my account being in placed as a late payer... Now for all my years I have never missed a single debit on anything... From my knowledge I have 50 odd day before I even have to pay Interest on it. I went into the credit only a few day ago why send me these messages? Do you see me as a risk for not paying back a portion of the R1000 credit only after a mere 2 - 3 days? Stop sending me these silly unnecessary sms's of pay immediately when I have only used my credit for a few days. If it is a system standard sms, change your standards. If not cancel my accounts. I am not a ***** I am not a person that pays my accounts late. Threat me with respect!