Telkom mobile night data

Night time data. I am writing on this platform because previous Telkom call center experiences do not encourage another attempt. I have a monthly mobile contract since February - with 1gig night data - which I am not able to access. My normal daytime data is ALWAYS being used first. I have researched other forums and one problem seemed to be that a router must be reset at 12.00 Which is nonsense because it is not needed to reset at 05.00 to use normal day data again. So it should not be needed to reset to use night data. If the network knows when it is 05.00am to start using daytime data, it should equally know when it is 12.00 to start using nighttime data. And anyway, I have a mobile phone, not a router. I am not going to reboot my phone every night. I have never been informed to do so in any case. Next problem might have been that Telkom switches to different carriers when a Telkom signal is not strong enough. So I switched off the automatic carrier choice and selected Telkom as the only carrier. So my Telkom daytime data runs very smoothly on the signal - but the moment (between 12.00 and 05.00 am) when that has been used up, I get the following message and my internet stops working. "Your internet access has been paused because you are using out of Bundle Data. Dial 180 to purchase a new bundle or open your browser for more options." Regrettably, I do not want more options and I do not want to buy more data. I want to be able to use the night data which is part of my contract that I pay for every month and which I am not able to access. I have 1024 Night Data available of which all of it will expire on 1 July - and I cannot use it. Kindly advise what can be done so that I can use a product that I am paying for.