Overcharged for poor service

<p>My mum is a pensioner who has had unlimited calls and wifi package from Telkom for more than 5 years, In February 2017 we requested a change in the package to a cheaper one. The change was activated but we still received a bill for the previous package. I logged a dispute at the Telkom stores. I also was advised to change to a LTE package for her by the agent. We did this in March 2017. The phone and the LTE was suspended. Went back to the store and another dispute was logged. To date the LTE and the Telephone has not been working but the bill keeps increasing. Plus an agent that called me told me a credit will be passed for the overcharges as my mum should have been charged a pensions rate. To date 4 emails to Telkom later and dispoutes no resolution. </p>