Telkom doesn't care about what customers have to say

My airtime together with the free airtime you claim to give me depletes at the same but when I do a balance check it remains the same only when I want to convert the airtime to one of your offers am told I have insufficient funds. I have been reporting this issue since March on this platform but you never reply. You don't even have a number so I can speak to an operator. I even have been send you messages on facebook but you never even bother to reply