Verification code problem since I was hacked

My phone was hacked and so was my WhatsApp,I've done sim swap Wens 11Feb 2025 but till today I'm unable to use my WhatsApp due to the fact that verification code was incorrect or used several times.Ive tried to contact WhatsApp help centre for day with out help,I can't useu WhatsApp and yet a hacker is able to use it and still using it