Been through a similar situation. I needed 7 band in each module. Appeared for the exam without any prep and the result was: L = 8, R = 8.5, W = 7, S = 6.5.
I thought in case I get stuck, it would be in the writing part but to my surprise, I got stuck in the speaking part. However I was confident that my speaking went well to score at least a 7. So I requested a recheck for the speaking part. Waited for 8 full weeks and the result made my day. My speaking was increased to 7 and hey, got the money back as well