Looking for Advertising agency to post Ads in 30 minutes basis

Hi, I am looking for someone or agency to post new Ads to gumtree in every 30 minutes basis. Requirements: 1. Post Ads to [login to view URL], for the regions of Sydney regions, Melbourne regions, Brisbane regions, Adelaide regions, Canberra regions, Newcastle Regions, Gold Coast regions and Perth regions. 2. Every Ad must be written in different content but for the same item. But it doesnt need to be accurately describe what the item is, just make it different content with each other. 3. I have 6-7 items need to post to each region, therefore total about 56 Ads need to be posted. 4. Frequency of posting ad must be every 20 minutes to 40 minutes. 5. I will provide all gumtree accounts. If one gets blocked by [login to view URL], I will send you new ones. I will send you the first 100 accounts , and if any of the accounts get blocked, I will send you more accounts. 6. I will pay $30 / week for your service. As in realiaity , gumtree accounts get blocked, I want to hear from your suggesition how to deal with it. As an Ad get bocked, the content need to be changed as well.... $30 maximum per week is what I can provide as the items are not those highly sought products. Looking forward to hear from you soon. Best regards