Disappointing service

My account doesn't make sense. This moth I didn't even receive an invoice. Finally found it and now all of a sudden I have a subscription of R200 I know nothing about. Also my 1.5 gig SIM was only used for a werk since it was lost and only later did a SIM swap, the account is much higher than the contract and according to the app I haven't over spend any of my limits. I try to phone Telkom but the stupid automated voice sends me in circles and I can't talk to any human!!! This is unbelievable!! What a disappointment!!