False information

So I purchased a phone from chatsworth pick n pay mtn.I was informed on the day that i will be double debited at the end of October as it will be a debit for September and October.I have received an sms stating that a debit of which i have not planned of has gone off.So i called the branch and explained.i was told i will get a call back.no body called back.so i call again and Mubeen explains that he definitely confirms that he told me the debit will go off twice next month or it will go off September and october. Im 100% sure that this is not true.Mtn pick n pay chatsworth definitely will not deal such poor service.