Very Poor after service

Since Thursday when 19/03/2020 when they came to install my Fibre I have been trying to get the outgoing mail server settings from SADV. The technician who came to installpromised will phone me the next day..... I have spend almost 2 hours on the phone to the call centre. Nobody in this company knows there email server settings for clients. Last call to them lasted almost 40 minutes, after which I hung up. The consultant did not even bother to call me back. I have been sending emails from my gmail account, they dont even bother to reply....These people dont worry because they are getting there pay at the end of the month, so why go the extra mile for a client????????????? VERY dissapointed!!!!!!!!!!! If it wast for the state our country is in I will cancel in seconds and get a new SP... Might I add, you can get the server settings for all other SP's on the internet