Charged for a new ADSL. Was supposed to be free

On the 23rd I was advised by a Telkom technician that my modem was no longer working. I went to Rosebank Telkom where I was advised that if I renewed my contract for a further 2 years at no additional cost I would receive a free modem.<br> <br> I have just received my new Telkom account where it shows that I was charged R481.58 for it.<br> <br> I have logged a call with Telkom about this. Ref ***4<br> <br> Rosebank also never emailed me a copy of my renewal as promised. Please be advised that I will not pay for the R481.58. I also want an apology for the inconvenience.