Customer made out to be ****!!!

I am highly upset today by the way vodacom deals with their customers of over 10 years with 3 contracts!!!!

I have been charged for airtime advances which I have not requested, being able to charged a handset installment fee when this was suppose to have ended at the end of may 2020 and charged for an upgrade fee when there was no upgrade done. I logged a query but it is up to me to forward invoices as proof that I have been charged these amounts as they cannot see it on their side!!! So I asked you where do I get my invoices from monthly, do I create my own invoices for my account and pay whatever I want to? Surely the invoices that I have should reflect on their side!!! They made me out to be a **** and that I now have to proof that this is the case. I am done with vodacom and refuse to made out a ****!!!! All my contracts will be cancelled with them. Cant see why I need to be with a service provider who is not willing to assist their customers and then has the audacity to make out as a ****