End my misety with this ****py connection

The internet connectivity is just bad and after calling rain for over three weeks to get someone on the advance team to assist me, I've got nothing. Just a ****py connection and bill to pay at the end of the month. I wish hey actually took the time to get back to us like they promise they will over a call. I'm always the one who calls them to follow up. Was told to put my router on different windows in and around the house and even after doing that to no avail I have a ****py connection. Don't know who or what at that company can end my misery, seeing as I work from home.