Facebook messenger bot

I need a bot that works with [login to view URL] or [login to view URL] and send messages to a given list of profiles/ids. Functionality: 1. load multiple facebook accounts for sending messages 2. Implemented spintax 3. Load excel sheet or notepad file with a list of facebook ids or fbmails or profile links (any 1 of those 3). This is where the message will be sent to. 4. Bot must have the feature where you can set how many messages you will send per account. Ex.: I will set the bot to send 30 messages, then the bot will change account after they sent 30 messages. 5. Feature to set time interval on when to send every next message. Bot should be able to send at least 1 message per 3 seconds on highest speed. 5. Bot must have a log file and show where is the problem if an error occurred I am ready to accept offers that are similar (pay more for more sophisticated bot or facebook tools or less for more simple bot), just make me an offer. I can buy from you working bot without source code, it's not necessary to create a new one, but I can pay more for bot with sources and possibility of further editing and improvement of the bot in the future. Thanks, Sergei