Mostbet Did Not Refund My 90 AZN After I Transferred 990 AZN From Account

Hi, good day. My name is Kenan A***, and my Mostbet ID is 43535***. I transferred 990 AZN from my account, but I only received 900 AZN — the remaining 90 AZN was marked both as a declined and successful transfer at the same time. I contacted our local Mostbet partner, and they told me that the 90 AZN was refunded to my account. Unfortunately, I have not seen any refund, and they have not provided any official proof or document showing that the amount was returned. Please help me in this situation, as I believe they are cheating me. My email address is Krasavchik_***@mail.ru, and I want to submit a complaint to the head office. I am writing to you from Azerbaijan.