Banned whatsapp, refuse service

My moms whatsapp and bussiness whatsapp have been banned they sent her this email:

"We have reason to believe your account activity has violated our Terms of Service and decided to keep your account banned. We received a large number of complaints about your account and in order to protect our users' privacy, we won't disclose the nature of the complaints. Responses to this email thread won't be read."

I really will delete my profile too if it is not fixed, my mom lives far away how do they think she talks to me and my little boy!

How can you say that you aren't even willing to help the customers??