Bad service

Yet again Vodacom is lacking any ability in running their business correctly. My mom has a few contracts under her name and was recently contacted to upgrade our contracts. Initially she agreed as the consultant explained that it would bring her payment down from R1399 with approx R400. But after much consideration she had contacted them back and explained that she had recently been retrenched and to cancel the upgrade. The upgrade phones then arrived at our home, but was sent back as per the conversation with the consultant. I then found out that my tablet was the only number upgraded from R125 airtime and 2g data to only 10g data. After numerous messages via facebook she had still not been contacted. The person on their facebook customer enquiries said that they had tried to phone her numerous times but the phone kept ringing???? This while I was with her the whole time?? Still this issue had not been resolved and now she is being charged over R2000 for upgrades that were cancelled and one that was not supposes to be upgraded!!!! This issue needs to be resolved a.s.a.p. my mom's details will be added as the reference as well as her contact number.