Isn't the purpose of real time charging, the charging is real time or almost real time with no to minimal delay? So, this means that we will not see any increase in usage until the 100MB are used up or the session is terminated or the 10 minutes is up?
Seriously, they can't comprehend even a simple question!!?
My chat goes something like this(my intention was to determine whether the problem was with my phone or the carrier, although other carrier has no problem):

Me: Hi, my 4G keeps dropping to 3G and the volte indicator is gone, is there any network issue or problem with my account?

Rep: What phone are you using?

Me: Samsung galaxy s8

Rep: FYI, not all phones support 4G, not all phones support Volte and it is still what experimental

Me: s8 does support LTE band 5 and volte.

Rep: Have you checked the APN?
(I don't know what this has to do with the cell signal strength, I can connect to internet just fine)
Me: Yes I did, the APN name is unifi isn't it?

Rep: I will send you the configuration. Install and reboot your phone.

Me:Ok

After reboot got email stating problem solved.

Me to myself: yeay, problem solved, what, no, whose problem???*profanity ensued*

It was probably my phone, but TM has a history of making disruptive config change before so just had to make sure. I am really considering porting out to Digi unlimited if they still have those