ADSL Data usagae - Bad attitude from consultant

Good day i called at 03/10/2017 at 12:45pm, needing assistance with the spike that occurred on my adsl landline usage on the 1st of October 2017. The new month data was loaded on the 1st October 2017 and on the 2nd i got the usage of 5.48GB used overtime , which is impossible. I needed assistance on this to be looked and analysed immediately as this is impossible. The consultant helping - Mandlakazi Qomoyi asisting me gave me an attitude and stated "there is no point in logging this request" and i need to find my own private investigator to trace this for me. I don't think this is correct either. I logged 2 email "abuse@telkom" and no response, which i assume this is were i can get assistance. but on my telecom i had - this wasn't the case. i need assistance in why overnight there is spike in usage - of 5.48GB which is impossible for one cellphone connection.