Telkom LTE poor service

I reported a poor (barely any signal) over a month ago for my uncapped LTE line. I have called over 10 times, sent messages, emails. I have been told a technique would call, and been told a manger will call, but to this day no one has been able to assist. I pay my Telkom bill without fault every month, they have even done a signal check on their system and the agent said this is extremely bad. We feel as though we are being held at ransom here with no assistance whatsoever, and we do not know who to turn to. Please may someone help. Thank you Matt