Running round in circles

In August they sold us a lte router after telling us we live in a lte area. Later on we found out that we live in a 2g area and there is no way the router will work. We filled in a cancellation form and got a case nubmber. Today they said the case is resolved beavose there is no problem with the router!!! Really??? How pathetic!! We are paying for 2 months for something that doesn't work. The call center(that we phoned alot of times) tell is a diffrent story each time. Just cancel the contrant that one of your incapable staff sold us and refumd the money you are *****ing from us each month. A month ago they told us they woul arange a pick up of the router and surprise surprivce we are still waiting!!! Disgusted behond with telkom