Telkom LTE problem with no assistance from Telkom.

I received a call from a Telkom agent who informed me that the copper network will no longer be serviced in my area and recommended changing to LTE. Three days ago I installed the LTE D-Link DWR-956M router provided by Telkom. It worked fine for 2 days until the Mobile connection LED turned red and internet connection was lost. I reported the fault but no solution was forthcoming. Today I took the router to a telkom shop and was informed that there is a problem with these routers with no resolution available!