Nobuntu won't address my complaint as promised

this is the third time I have posted this on Hellopeter. Last time you said you would escalate it. REQ:***.<br> Please note that at no time did I ever request MTN to lift the \billing limit"on my account and that MTN over billing me during August 2015 was due to a fault on the part of MTN. MTN has closed this call saying That I requested the limit to be lifted. MTN has been unable to provide any proof that I requested the limit to be lifted (because I did not) <br> And see See call reff ***<br> Nobuntu said she would phone me withing 48 hours and that I should give her a chance to \""prove\"" that she is not like all the other call centre agents who promise but do not deliver. <br> Since then I have e-mailed her and complained on HelloPeter with no response from her or anyone else!!!!"""