Misleading info

Came in last month the 15 to make a payment and wanting to downgrade and she told me l could make the changes from my actual payment date going forward not [URL Removed] in on the 26 happend to be assisted by her without recognizing her l explain my needs about the down grade she tells me it cannot be done l should have came in before my payment date no later and when l told her about the information l was given by the lady that aqgssisted looking at the slip she tells me there is no way she could have said that.Being unemployed with a tight budget for 2mths would l make such a supid mistake