Unusable LTE Data Contract

What are my options for the terrible LTE speeds at my home. The speeds are so terrible that I cannot use the data that has been allocated on my contract. I have suffered month to month and realized that data contract is useless to me as I cannot use it as a secondary connection at all due to the terrible speeds that I attain. Your coverage map is not accurate and that was the basis of the commitment from my side. I am basically paying telkom for no service on a monthly basis. I have tried different mobile operators and I achieve much better speeds on their network. I am of the opinion that as a consumer I am not getting value for money , if the service worked as promised by your sales people then I would not be contacting you regarding this matter. I feel ****** as a consumer and I know that you are going to refer me to some clause that states "Best effort service and that speed is not guaranteed" well if that case and this the best service I can get from a data service then your best is not good enough. My complaint is based purely on the fact the service is unusable where I reside and pretty useless for my needs. Number in question ***[Data contract]. I am not sure if this complaint will be actioned or just ignored. If by some stroke of luck and Telkom decides to contact me , cell number ***.