128mbps data runs between 4 to 14 mbps

According to the fair use policy on Telkom Mobile unlimited package, after 15 gb data is used<br> the data speed will be down trodden to 128kbps, i have reached that stage seen the data speed is much less.<br> I decided to do numerous speed tests and found the downtrodden speed is only between 4 and 14 mbps. I would like to know why Telkom mobile is not keeping to they policy and find this to be in bridge of the contract i signed<br> and agreed to. I would like Telkom mobile to sort this out as soon as possible and restore this speed to 128 kbps<br> and give feedback as soon as possible. I have lodge a complaint at telkom mobile call cente case no ***2 with Nosipho, but still awaiting feedback.<br> <br> Regards<br> Eduan SJ Naude