Unauthorized debit order

I have been using Rain as my service provider and, overall, I have not experienced any network problems. Whenever there are service issues, they are usually communicated to customers. However, I have a concern regarding an unauthorised debit order that was processed on my account. My service is on a month-to-month basis, and my debit date is the 1st of every month.I did not have money for the service on 01May, A debit order went through without my consent on 26 May which is not my debit date, but I did not query it at the time because I assumed it was my payment for June.On 2 June, my service was disconnected, leaving me without internet access. Since then, I have made multiple phone calls and contacted Rain via WhatsApp. I was repeatedly informed that a member of the Retention Team would contact me, but to date, no one has reached out to explain why funds were debited from my account without my authorisation. I would appreciate an urgent investigation into this matter, as well as a clear explanation regarding the unauthorized debit and the suspension of my service.