Incorrect internet gigabytes

[Deborah]

Hi @Hmaj7, I sent you a private message. As soon as I have the requested data I will provide you with support. I remain available. Good day.

[Hmaj7]

Buonasera.
I bought a tariff (8,99€, 150gb, 150 min and unlimited SMS), but in the app it shows that I have only 100gb, why? Where is my 50 gb?