Great plans, bad service/assistance

<p>I have a mobile plan with telkom, which includes a certain amount of data, and every month, mid way through the month my data speeds reduce significantly. Telkom denies that this is a problem from their side, and I know it's not my phone. I use an Iphone 7 Plus. Works perfect in every country I travel to and I use more than 8GB on average every month. I have no data restrictions/apps restricting my data use. It automatically goes back to normal speeds at the beginning of each month. (Fishy)</p> <p> </p> <p>Telkom doesn't give me any better advice than switching my phone on and off or selcting and deselecting "automatically choose carrier". This is highly unacceptable, I'm a paying customer and need to get a better answer to this and I feel like this may be something they're trying to hide or a scheme to get people to use less data. </p>