Rain's Communication and Commitment to Customers is TERRIBLE

On the 14 of May I had switched banks earlier the week so on this day I decided to change my payment methods on the rain website. The issue was I was not receiving the OTP to complete the change and submitted a ticket to that effect. Only to receive a response on the 23rd of May advising me about connectivity whilst the subject line of the email stated "Billing". I then responded and further explained what my issue was. To date this has not been resolved. My next payment date is approaching and that debit order will bounce whis is what I was trying to avoid by making the change earlier.