POWR Contact Form Builder

OVER CHARGING ISSUE! BE AWARE!!
I installed this app on 3 stores, and after the trial period, I went ahead and upgraded the plan in one of the stores. Instead, they charged me the upgrade in 2 stores out of the 3.
When contacted the customer service after 2 min it happened to tell them about the issue, they said they can't return the money they took with no permission, and they can only cancel future payments.
Since then a week past no reply