Rain service and support non-existent.

Ordered a 5G modem. April Have been charged twice for it. R654 per month Have tried connecting it. Can’t, have followed all instructions. Keep on sending Rain support emails. All they do is say they will respond. No one ever responds to emails. Have requested a few times to cancel the 5G modem account. Can’t cancel it online and no one ever responds to any queries . Can’t get a signal in my area and would like it cancelLed. Have been charged over R1200 and can’t get a response from them and can’t cancel it online. It doesn’t allow me. Service and support is non existent in this company.