Terrible support and Customer Service

Pathetic service I have a modem data deal with them and i have logged multiple queries with them regards to never having LTE or proper 3G signal with the modem. I have tested updated the modem software and reset it to no avail. I have called the call centre on numerous occasions to never get through even the Telkom chat app to try speak to an agent to no avail also. They never get back to you but just sms you case numbers and say you will receive feedback in 23 to 48 hours 2 weeks later i still received nothing but im getting billed on a modem with terrible signal and service. I'm even considering canceling the contract