Please people stop sending me wrongs smses yet you gonna disconnect my signal here, it sucks

I received an sms from Multichoice asking me to pay a certain amount before my account is completely closed because will have to pay a certain amount on top! I recently paid my account and I later called them to clear an error me, they then told me I'm few rands short so I must pay then, why the hell did they send me an sms with wrong figure then because its them who sent me how much I should pay! Help me get answers from these imbeciles nxa! On top of that I authorised them to debit on my account but now this.