Mods required for an Autoit Script

I have a simple autoit script comprising 500 lines of code, a basic gui and basic dialling process. I need some basic mods to it including: - recognise dead/engaged tone/not recognised voice and end the call - identify if the call has died before its specified end time and move on - improve the current option for calling between given times to also include dates - additional options for providers / called numbers - allow software updates to automatically happen from a server - including rotation of numbers (config settings) for users I need an experienced autoit dev or someone who can easily pick it up to make the mods - need to be familiar with git as code repo is in bitbucket. Can start immediately.