KB Designs review for Winback: SMS Marketing

I installed this app in the summer of 2021 and it was fantastic for a few months as was customer service with "Joe". By January of 2022 (I was and still am on the $179/mo plan and have purchased thousands of extra credits), the delivery rate plummeted and customer service became sparse. I have BEGGED (via the app and email) to have management call me to discuss the issues with the app not delivering despite the count saying 100% (I signed up as have numerous customers just to test it and RARELY receive the texts). The app "takes credit" for sales after texts go out even when those customers verify they did NOT receive the text and thus, their purchase was not at all thanks to Winback. My emails and messages requesting management contact me to fix errors (and surely offer a massive credit) are to date, almost a year later, unreturned. I am very frustrated with the lack of care for a customer who has spent a decent amount of month and who has begged for help. I do not, in any way, recommend any level of this plan given the entire 2022 performance. I am uninstalling it now as I cannot see groveling for help for another year with most of the 3k customers signed up verifying they RARELY get the texts I send out.