Telkom Technical Department doesnt know about VDSL

I called Telkom sales to change my 20VDSL to the VDSL profile(its currently on a 20MB adsl profile) sales didnt know what to do (i expected this) so they transferred me to the technical department. when the technical department guy asked me how he can help i told him that i want the vdsl profile because i am on a adsl profile now, he didnt even know what VDSL is. He transfered me now to some department, i am still on hold for this department as i am typing this.