Unable to connect to the internet when I have data

Poor service from Telkom is really frustrating me now, i have 13 Gig remaining in my account however when i try to connect it tells me that i have ran out of bundles. I have had several chats with the customer service consultants online however all they do is close that call while i am still typing. i tried calling and i was holding for 45 minutes without anyone picking up the call, Telkom is so bad they don't even deserve 1 star rating.