Upgrade not approved now I need to get affidavit

I called on the 9th to query (***) why my contract suddenly increased in price and found out that there was an upgrade done to my data contract (3Gig) to a cellphone contract (uChoose Smart M) without my approval (why would anyone convert a data contract to a cellphone contract?). Now I need to send Vodacom a copy of my ID and then go to police station to obtain an affidavit. Is this really customer service? I am being inconvenienced because of your ***** process? You need to prove that I approved this!