Telkom refusing to provide settling balance

I canceled my telkom adsl line on the 14th March and advised that i will onlu be billed to the 14th april. Ref: A1 ***. Both the branch and 10210 agents say that they cannot provide me a closing balance and can only process the cancelation request. 2 disputes were logged regarding the bill i was invoiced right until the end may. Going on for months now. what is the coorect settling balance to 14th April? Fedup of telkoms answering machines and uselessness.