Paying for services and not getting it

I fell into financial difficulty last year and skipped payment of my internet. A gentleman from Telkom contacted me and we discussed and agreed that the account should not run on. At the time it was just over 1500 ZAR. our line was suspended , but we were billed every month thereafter even though we had no line and no internet access. Subsequently our bill ran up in excess of 8000ZAR. We only have to pay about 900ZAR of that to square the account. My concern is, why did we have to pay more than 8K for nothing, surely at the end of the term, we should getting something back? we are hitting corporate walls here. please assist.