LTE Disaster

Ordered the uncapped lte deal from Telkom in the beginning of Jan. From the very first day it was slower than my landline which was running at about 4 mbps. So I thought it was because they haven't installed the antenna yet. After waiting 9 days for that it still didn't work as advertised. After many complaints I got a case number on the 21st and still no one has contacted me (It's been 3 weeks). Every time I call they say they are attending to the problem. This doesn't help me because I still have to pay for my Telkom landline otherwise I'm stuck with slow internet. All I want is for someone to contact me and tell me what, if anything, they are working on and when they expect it to be resolved.