Are you sure you didn't break any rules, have you read their TOS? If you never break any rules below, then you don't need to be worried since it will be solved soon.
Prohibited Uses
PERSONAL USE. The Service is intended solely for the User’s personal use. The User is only allowed to wager for his/her personal entertainment. Users may not create multiple accounts for the purpose of collusion, sports betting and/or abuse of service. Multiple accounts may be approved for the use of the casino service only if granted by staff.
AML & SANCTIONS COMPLIANCE. Stake expressly prohibits and rejects the use of the Service for any form of illicit activity, including money laundering, terrorist financing or trade sanctions violations, consistent with various jurisdictions’ laws, regulations and norms. To that end, the Service is not offered to individuals or entities subject to United States, European Union, or other global sanctions or watch lists. By using the Service, you represent and warrant that you are not so subject.
JURISDICTIONS. Persons located in or reside in United States, cw, Syrian Arab Republic, Islamic Republic Of Iran, The Democratic People's Republic of Korea, Australia, Netherlands, United Kingdom, Portugal, Serbia or Slovakia (the ”Prohibited Jurisdictions”) are not permitted make use of the Service. For the avoidance of doubt, the foregoing restrictions on engaging in real-money play from Prohibited Jurisdictions applies equally to residents and citizens of other nations while located in a Prohibited Jurisdiction. Any attempt to circumvent the restrictions on play by any persons located in a Prohibited Jurisdiction or Restricted Jurisdiction, is a breach of this Agreement. An attempt at circumvention includes, but is not limited to, manipulating the information used by Stake to identify your location and providing Stake with false or misleading information regarding your location or place of residence.
Stake has a good reputation casino, I don't think would scam you for those amount. You need to be patience more and wait for Stunna or MICRO look into your accusation.