Vodacom deceit

Vodacom called me, telling me that they can help me save money on my current contract. They offered me a router, my existing benefits will stay unchanged and in stead of paying R299 I will now pay R129. Only to find out that they added an additional contract. I called them on 30 May 2022 to collect their router and cancel this additional contract and I want my money back, they are debiting my bank account and I'm not using the router, I followed up twice and until today no one has collected the router. Vodacom, please collect your router and give my money back.