Customer exploitation

MFC is exploiting their customers I made an arrangement with then via email and they never responded however they decided to do send me a msg Wednesday saying they will deduct 2130 as agreed of which its a lie I never agreed to that amount nor made any arrangement of such amount upon calling them the consultant said the arrangement was made telephonically and that is naked lie too no one from MFC called me I requested a copy of the call but never received it their customer care is awful I was on call for an hour with no help