Read and advise without insults, please 🙏

My hubby stays abroad. We normally talk on phone. I have a business I run here in Nigeria. I employed a sales girl not up to two weeks now. My sales girl hasn’t mastered the prices of goods, so she calls me on phone if there is need . My hubby is a type that likes constant communication… So we do communicate like almost 15hrs a day. I didn’t go to my shop today because I wasn’t feeling too strong. I was on call with my husband when my sales girls call came in, it interrupted my husband’s call. My hubby picked an offence, that I should always take permission before diverting to another call. NB: he was calling on WhatsApp and my sales girl was call my phone number. When I logged into WhatsApp I gave a voice note apologising to him that it was my girl that called and I needed to pick up because she is new and I don’t want someone defrauding her… secondly, when a call comes to my phone it interrupts the WhatsApp call. I tried to explain to him but the next thing I saw was a voice note from my husband, he said that it’s high time he starts treating me the way other men treat their wives that I am very stubborn… I got angry and gave him back a voice note that how does other men treat their wives and if he treats me like that, then he should be ready because I am going to treat him how other women treats their husband’s too. He has not called me back since then or chat.
NB: this man can suspect someone for Africa. He thinks the call was from a man. This is 6years of marriage and we have a child together. He cares for me and my son.. but this issue of lack of trust and telling me he will start mistreating me soon. I don’t understand again.