Countless Attempts At Feedback Being Ignored

I cancelled a line with Telkom, which in itself took around 2 months to finalise and also only after I went in store to complain about it. While in store, I asked for both of the lines to be cancelled and then enquired as to what happens with the query, this was almost 2 weeks ago an still no answer. I sent the branch emails, I get ignored. They simply just read and not respond. I WANT TO KNOW WHAT WILL HAPPEN TO THE CREDIT AND I WANT CONFIRMATION OF THE SECOND LINE BEING CANCELLED TOO. How hard is this?