Money in hold

Good day.

A some of R600 was missing from my account last night I then called capitec help line and they said it is on hold after they received an email from fnb saying I received money from someone who is connected with *****... I tried enquiries from a friend who deposited R600 to my account last week she said her account is okay. So I really don't understand what's going on since I'm not given detailed information even after visiting the branch today. On my account I'm able to do everything so far but I'm afraid it might affect account or get it frozen and I use it for my business. I'm really stressed out please help me found out what is happening... I was given case number:***7 at the branch today

My names are Ngobeni kurhula prudence