Terrible Telkom

I have wifi that I pay roughly R400 per month for on a 2 year contract. I should reach speeds up to at least 60mbps,but for the last year, it is running at about 2mbps. Tried contacting Telkom, but no luck. They keep promising that they will come back to me or send a technician. Still waiting. I think it is unfair that they treat their clients this way. If we do not pay, they are quick to write you up, but when we as customers get no service, what can we do? I will not renew my contract with Telkom, nor will I recommend then to anyone. Proof to me that you are willing to look after your customer, try then maybe I will change my mind. Regards