Disrespecting prospective clients

I had tried joining this company on one of their Fibre deals. I filled some of my info online and today they got back to me so that we can finalize the deal. I received a call from someone called Snegugu Mbambo who showed absolute disdain. This was after I asked her the simplest and surely the most common question when it comes to Fibre package, i.e. if there is any Fair Usage Policy (FUP) on the package I was interested in. She first referred me to an email that she sent that had "Terms and Conditions", which I had to sign and send back to her. When I stated that those didn't have a clause on FUP and insisted that she indicates if there is any. Instead of giving me an answer, she simply put my call on waiting (as that "waiting tune" started playing). After a minute, she then dropped the call and never called back. I decided to put the question on a reply to an email she had sent me with T's and C's, she also never bothered to reply. If a company wants to grow, people like Snegugu Mbambo are a liability.