No phone etiquette

Hi there, I received a call from this number this morning ***. The lady asked if she could speak to my husband addressing him by his first name and I told her he was unavailable and asked what's it in connection with but she put the phone down on my ear. Since it was a cellphone number, I decided to call her back, I said you just called me now and asking to speak to my husband and when I said he's unavailable you hung up whilst I was still talking to you. I asked for her name and I think se sain Bonisiwe, I further asked where she was calling from she said Discovery and what was te purpose of the call I asked and rudely she said I waned to speak to your husband and I said in connection with what and she said I'm looking for your husband and she mumbled and hung up. I tried calling her again but her phone is now on voicemail. I'm disappointed that Discovery would employ people with no phone etiquette whatsoever. I mean first of all, if you calling your client with a cellphone number, the least you can do is advise where you are calling and properly introduce yourself etc. I don't know if she is really from Discovery but sounds like a complete ***** but if she has no idea what Discovery values are and she shouldn't be calling clients. I need this lady addressed and I expect to receive an apology regarding this as I'll be blocking Discovery calls going forward as we don't know if they are legit or not. Regards, Lerato Shingange ***