Telkom LTE unlimited package capped to 100GB without permission

I signed up for 2 x LTE,s in January this year. Package is Smartbroadband Wirless Unlimted. In the third month of the contract Telkom changed the package to 100GB fixed while still charging the unlimited rate. We no doubt reached that limit before the end of May. I went into the Telkom store at Cape Gate in Kraaifontein Cape Town. They saw the problem but could not change or fix it at store level and logged the problem and I was given Ref numbers. Now 22 June same thing happens. We reach the 100GB and now I am out of bundle. I go back into the store. The problem logged was still open and had not been attended to. The staff tried all from their side to address this but again said they could not change the package at store level and then relogged the problem on the same Ref numbers. No one can tell me how soon they can and will attend to the problem. My only solution to be able to operate is to purchase more data at out of bundle rates. While I have paid for unlimited. So I have to foot the bill for Telkom incompetence. I am going to cancel my 24 month contract.