Poor service

I have an outstanding amount which I don't know where it is coming from plus since I got the SIM card I cannot view my data usage. FYI I got the SIM card on the 5th of July 2023 when I access my services on my profil I literally can't do anything because it is telling me about outstanding amounts. I tried getting help from supersonic but it seems like the service I'm getting is poor to the core. I'm tired. I even wrote a query on my profile but they don't even follow up on clients. Not even a single phone call, my problem is not that complicated it could be resolved in an instant.