Paying for product that I didn't have.

Hello In July 2021 I app**** for data on contract with telkom through hifi-corp. I app**** for 2 routers, but I was approved for only one. That is what I was told. Just a few days ago, my account was suspended due to non-payment. When I called to find out why because my account is up to date. I was told that I have another account. This account is for the router that I was declined on. I have never received any statement for this account or the router. I went to hifi-corp to find out. They told me it was declined initially but eventually approved. I was then given the router yesterday the 29th September, which is almost 3 months later. Now telkom wants me to pay for the months in arrears. This is unjust, why should I pay for the months that I did not have the data. I wasn't at any fault here, why should I pay for their mistake? They didn't even apologize.