Do not change your Payment Date or pay before your selected Payment Date

I requested for my payment date to be changed from the 25th to the 1st around mid March 2025. On the 27th of March, I selected the 'pay now' option to make payment to Rain, way before the new payment date. They still wanted to collect from my account on the first and hit me with a disconnection on the 02nd of April. Can their system not check if payment has been made already? I contacted their support team, they confirmed my payment dated the 27th of March, but still insisted that I need to pay another full amount (not pro rata) for the 1st of April. Since this does not make sense to me, I requested for my payment cycle to be reset to what it was (25th of every month). That has been done, my account now shows ‘up to date’ on their website, but I still do not have internet connection. When I try to connect I get a ‘action needed’ message that leads to their page which says I still need to pay (even though my account is ‘up to date’). Since yesterday, no response from Rain. So Do not change your Payment Date or pay before your selected Payment Date; it only leads to a disconnection, frustration and dead silence from Rain.