Mtn flexi contract

I am writing to formally raise a concern regarding my MTN Flexi subscription. On the 1st of August 2025, I purchased a Flexi account with MTN. However, on the 13th of August, the service stopped working unexpectedly. I contacted your customer service team and was informed that the issue would be investigated. Today, I purchased another Flexi subscription, but after making only two calls, I received a message stating that I am no longer subscribed to the MTN Flexi service. This is extremely frustrating and disappointing. I have proof of all my purchases and would appreciate it if you could either restore my Flexi subscription or refund the money I spent on both purchases. Thank you for your attention to this matter. I look forward to your prompt response and resolution.