bad service n not solving query

1st i called cellc i spoke to a person from techinical deprtment her name was charity she muted me and she dropped the call she didnt even bother calling me back. i called again i went through to thuli Mampondo she she putted me oh hold for a while and i asked to speak to a team leader her name was thulisile mkhize she didnt help at all all she gave me was attitude. my query was about my airtime and dat bundle. my dtata bundle where finished without me even known and my airtime was gone i checked my phone my my phone showed me i used 34.47mb while the consulteant tells me i used up all my 50mb and went throught my airtime wha i know is cellc send you sans sms when u have 15 megs or less and when your data is being depleted i didnt get that message and this has been happening for a while but ignored it. if cellc operates like this they are robbing us all iwant is myairtime and data that all and also please teach your team leaders how to speak to consultants coz i didnt like the way she was speaking to me i just need my airtime and data and the logged me a service request the ref number ***