5months and still waiting on Telkom to resolve

Telkom sold me a package that promised super fast 4G internet and unlimited data until 31st March 2016 (the two main features that lured me to the deal). They did an in-store check to see if out area has Lte coverage which it did. It was later discovered that our section of the road doesn't have coverage. The technician who was sent, after numerous calls to the call centre, visits to different branches and countless hours of persistence being pushed from pillar to post, was shocked at the extremely slow speeds and poor reception. He said that they had to install a range booster. I have not been able to use a service which was promised and contracted to, but being paid for in full, since I signed up for it in November. The months of 'unlimited data' have now passed and I haven't been able to make use of it. I feel deceived, done in, ********** and treated with disregard by Telkom. I begged them to install the range booster before 13 March 2016 because my wife and I was leaving abroad until 6April2016(a period we told them we won't be available to Telkom) and we wanted to be in contact with the kids.They promised to do their best but nothing came of it. <br> Pls help. Case no.***6