Disappointed with Vox's Handling of My Account

I have contacted Vox numerous times requesting that my payment due date be changed to the 15th of each month. Unfortunately, I have been told on every occasion that this is not possible. The problem is that my internet service gets suspended around the 4th or 5th of the month if payment has not yet been made. When I am able to make payment on the 15th, the service is reactivated, but I am still required to pay the full monthly fee even though I was without internet access for part of the month. Vox's proposed solution is for me to pay a double premium for one month so that my account is always paid in advance going forward. Unfortunately, I am not in a financial position to make a double payment, which makes this solution unrealistic for me. I understand that accounts need to be paid on time, but I feel that more flexibility could be offered to customers whose salary or income dates do not align with the current billing cycle. I would appreciate it if Vox could review my situation and assist me in finding a fair and workable solution. Thank you.