******* Upgrading of Business Package without obtaining consent

We have a Vodacom contract at our business. The contract was due to come to an end, to which I was sent an email by Singh, Lavashni, Vodacom (External) <***> with a subject line "Sim Upgrade Processed" which informed me of an upgrade done on the business package, to which no authorization was granted to as the person emailed is not the person that is supposed to authorize the package upgrade. I requested her to revert everything and speak to the finance department before going ahead with the upgrade and no forms / documents to confirm the upgrade was submitted. The email that followed informed me that the phones where upgraded without confirming that the phones were still needed OR speaking to our finance department before continuing. on top of that, about 30 phones where delivered to our offices, but still nothing was agreed to and no paperwork was submitted to Vodacom to agree to it. If you try and call that person now, you cannot get hold of them. Absolute ******* upgrade and practically "Bullying" into an upgrade by using a random employee of the company, not following the authorization process and legally obtaining authorization.