Media buy update not updating media buy

[EmmaLouise2018]

Request

{
  "media_buy_id": "mb_0b578df6db94",
  "buyer_ref": "media_buy_1763003879150_iggblp",
  "packages": [
    {
      "package_id": "pkg_prod_291a023d_91d73e08_1",
      "buyer_ref": "media_buy_1763003879150_iggblp_pkg_prod_291a023d",
      "budget": 30000,  //  Budget updated to 30000 from 19000 
      "pacing": "even",
      "bid_price": 4
    }
  ]
}

Response

{
  "success": true,
  "status": "completed",
  "data": {
    "media_buy_id": "mb_0b578df6db94",
    "buyer_ref": "media_buy_1763003879150_iggblp",
    "packages": []
  }
}

Still seeing 19K within the sales agent