Nightmare customer service

This morning I called tenacity because I had an Ackerman's account that I couldn't pay due to unforeseen circumstances and it was handed over to collection... So today I called tenacity to check if they have received my proof of payments that they asked me to send because I wanna settle the account month end shuuu I spoke to Mallen or Marlen who yelled at me and refused to listen to a thing I had to say coz I was trying to explain to him that I'm wearing a mask that's why he can't hear me clearly when I call out my ID number he then asked me to drop the line and call back and I did and I got through to him again and he told me he was the only available consultant others are busy so I ended the call ... I begged him not to yell at me but he still went on mem mem screaming at me who does that what kind of customer service is that where by a consultant yells at customer's...this made me very frustrated coz this guy made me feel like a fool like I don't matter yelling at me like a 2 year old I feel bul**** by this guy coz no one has a right to speak to anyone the way that this Marlen spoke to me...