Sectigo SSL Certificate Reviews

I am trying to install the SSL certificate that I purchased. I went to their "live" chat. After a log wait, this is what followed. ----------------------------------------------------------------------------- You are now chatting with 'Jaden' Peter ***: Hi. Re: ORDER #****, Domain name: ****.com. Running on Apache on CentOS. I am trying to install the certificate using the instructions here. https://support.comodo.com/index.php?/Knowledgebase/Article/View/637/0/certificate-installation-apache--mod_ssl Peter ****: I have two files: ****_com.ca-bundle ****_com.crt . However I also need another file: /server.key . The instructions do not say where I get this from. The email said: "You can also find your EssentialSSL Certificate for ****.com in text format at the bottom of this email." Am I supposed to create a new file, server.key, and put the text of the EssentialSSL Certificate in that file? Peter ****: Hi Jaden Peter ****: Hello? Chat session has been terminated by the site operator. ------------------------------------------------------------------------------------ I then tried to log in, just after registering and got the message: We were unable to log you in as this account is disabled This is by far the worst service I have ever received in registering an SSL certificate. I am glad I only purchased for 1 year.