Rude and unhelpful

After my complaint I received a called from the "SM Department" Theodora. According to what I understand even if I ask them to allocate payments I made to different accounts (after I asked Cell C previously to link my accounts) they can't assist their customers if you paid into 1 account via easypay. I have been a Cell C customer since 2018 and I have never had such bad service before. I pay my account but they make me feel like I am the one in the wrong. Theodora was also very rude and interrupted me when I tried to explain that when I send the proof of payment I explained which numbers the payment was for - but they ignore a customer's instructions and just allocate as they wish.