Hello,
I have develloped a bot that work with twitter API. It need to be install on a VPS.
Once install you can add account to the bot and seed member that the bot will scrape followers from.
Filters are preset to follow active/real people and no follow back to avoid getting bots as followers.
You can also give the bot a list of rss feed so he create automaticcaly tweets from those list.
I can configure and install this bot for you on a vps that you own if you need. My price include installation and configuration of this bots.
Please let me know if you'r interested.
Best regards