Slow LTE Network

After been very excited about the new LTE network from Telkom the excitement changed to a very upsetting experience. After about a month the speed dropped down to 2mps and going up to about 5 or 6mps and that is on a good day. Logged a call at the call centre and after 6 months, it was March 2017 got a visit from the technician who tested the router and signal and informed me that there had to be an external antenna installed but he will submit his report to get an antenna installed. When i called the call centre July 2017 i was informed that the case was closed /resolved without anything been done so log another case which is still not resolved and when i phone the call centre the agent tell me the there is no feedback from the technical department yet. So it is going on for month in and out and on 13/09/2017 a teamleader informed me that i can contact her via email to speed up the process and so i thought that at last i'm getting somewhere............ email this person on 14/092017, 18/09/2017, 19/09/2017, 26/09/2017. on 22/09/2017 and 26/09/2017 phone and leave messages to be called back but up to this day 27/09/2017(14 days) no response not an email or phone call from anyone at telkom. THIS BAD SERVICE IS GOING ON FOR MORE THAN A YEAR NOW PLEASE WHO CAN HELP? To phone the call centre every time it take from 15 and that for nothing, BAD SERVICE COSTING ME MONEY