Sim swap without my knowledge and my money is gone mnt please I need answers

On Tuesday I was ****med my money was widraw from my account all of it 3500 when I call my Sim card was not working n I found out that someone did simswap online n it was not me my card was with me and the widraw happened at rooderport it says momo mtn fintech am not okay at all n when I go to the office mtn yesterday they say someone made Sim swap on wensday how can someone make a Sim swap with my ID or my information am so hurt as we speak I didn't pay rent n school transport even if sassa money gone