Can't use mobile internet at all in Belgium

I have set up an e-sim card at one of your offices and the person, who set up my account assured me that I don't need it anymore and that I will have internet in Belgium included where I resign right now but the internet is terrible and the nearest KPN kiosk is 6-8 hours away from me as that much time it took me to go there and come back I have unlimited internet subscription and I can't use the internet at all, I followed all the steps I found in the past 3 hours but no solutions I tried calling all the customer support lines no answer I set up an appointment from the chat bot and nobody called, absolutely terrible service if you can't provide me with internet terminate my number I don't want to pay for nothing. My Bulgarian (poorest country in EU) sim card have 4 G while KPN is on roaming don't call yourselves the best internet suppliers!