Vodacom offered me with home internet in March last year, got connected for one month only, thereafter router started giving me problems including not wanting to connect

Vodacom offered me with home internet in March last year, got connected for one month only, thereafter router started giving me problems including not wanting to connect. I Submitted the router several times to their Vodacom repairs shop but problem remains unresolved. The last time I Submitted the router was in December 2023, never got any kind of update until today. What's frustrating me the most about this is the fact that they continue to bill me regardless of the matter.