Rain - Another company with subpar customer service

My payment failed on December 30, 2023. Subsequently, I used the SMS link provided by Rain to make the payment on December 31, 2023. On January 2, I received another message from Rain indicating that they had not received the payment. Upon contacting them, they instructed me to submit proof of payment and additional details for payment tracing. I promptly sent an email with the required proof of payment on both January 2 and January 4. However, as of January 11, I have not received any response. During two separate phone calls ( amongst 6 phone calls made). I endured wait times of 24 and 51 minutes, respectively, only to be informed by the next call agent that the accounts department will get back to me without specifying a turnaround time. This situation is frustrating, as it seems that prompt action is expected for non-payment disconnections, yet my overpayment has not garnered a timely response. Fortunately, I have canceled my services with Rain due to the unsatisfactory handling of this matter. Rain, kindly expedite the refund of my overpayment. Let me guess..... the response to this will be "We're really sorry your rain experience hasn't been as good as you expected. We're going to get on this ASAP. Thank you. rain."