LTE shocking ping and latency

The past 2 months the LTE network is so congested and overloaded at nights and on weekends. The service is completely unusable and there seems to be nobody at Telkom that actually cares about paying customers. We are forced into contracts then once signed the service is just not there and we end up paying for nothing. This used to be a great service for the price but now money greed has kicked in and customer service is non existing. I have logged calls and website queries and DM messages on Twitter and on FAcebook and have had no reply or response. My business is suffering and I will become a non paying customer very soon due to your incompetence.