LTE all time vs LTE night ****

Guys watch out.. And keep track.. Telkom LTE night surver data is supposed to deduct from 00H00 till 07H00...but instead of getting all internet traffic from your night surver data deductions, it takes from your LTE anytime Data aswell .. I tracked it for the last couple nights since I'm working on nightshift.. During the day(from 06H00) I would take out my simcard N only put it in 01H00(since I have over 500gigs night data n trying to save my 12gig anytime.. So I will use another Sim during the day (which calls divert from my telkom, which is my primary ''nr no my other Sim(while my telkom Sim is totally out of any of my phones) .. But I needed to see something.. So during the night I would watch videos N movies via the telkom Sim(from 01H00 to 06H00).. But I notice yes it does take from my night data, but they also take from my everyday.. How I don't understand, cause that telkom Sim I take out every morning at 06H00..cause I suspected this to happen.. Every Month I forfeit 100s of night data, cause it expires, so I needed to make sure why I have load 2times a week with R199 LTE, which doesn't last, but I constantly forfeit hundreds of gigs of night data,.. Does this also happen to you?(mind you, I use my phone only for social media, and their videos, and the occasional movies (but mostly on nightshift) during the day I sleep.. Could it be wrong settings, or am I being ******..i already tried to complain or get clarity, but I'm being sent from pillar to post

And worse part. You don't get a choice of only buying LTE anytime only. Otherwise I will not buy night(which will anyway expire from most users, cayse who is really awake between 1H00-06H00) But cause they know u pay for both, but rarely use night,.. Does this only happens in South Africa?