*****ulent activity on my account by Telkom Agent

Hi. I'm want to tell you about my experience from Telkom, i had a contract with them 2 years ago and when it finishes they wanted me to take a new phone, so i did not renew , they were calling me everyday to renew but i did not, so they decided to add the sim card on LTE while i have and LTE i'm paying where i stay, without discussing it with. the June statement came yesterday 09June 2025 that's when i find out they added the phone that i had the contract with them on LTE without agreement. So when i talk to them they told me their Agent do that when they dont want to lose their sales so they wont cancel it because its new and it was created 17 days ago they are unable to cancel, they will be able to do so after 3 months. so now i have to pay 2 routers in the house because of their mistakes im not ok about it. What must i do now because i'm already charged double and i cant afford to pay double amounts for 3 months, please help me.