Paid buyers using similar negative reviews across different brands | fake reviews from competitor

Dear Amazon Comminity Team,

I am writing to bring to your attention a serious issue regarding fake negative reviews left by competitors that have been targeting my product (yoga ball) and potentially harming my business.

profile 1: https://www.amazon.co.uk/gp/profile/amzn1.account.AHQJKUHU7EW62FXRBBRTM6PUSJPA/ref=cm_cr_othr_d_gw_tr?ie=UTF8

profile 2: https://www.amazon.co.uk/gp/profile/amzn1.account.AH6ZH77Q3EFKEFUFMQOTE6DXCWUQ/ref=cm_cr_othr_d_gw_tr?ie=UTF8

profile 3: https://www.amazon.co.uk/gp/profile/amzn1.account.AECDWVBCDJDSS55XLITWBAVYSO5Q/ref=cm_cr_getr_d_gw_btm?ie=UTF8

profile 4: https://www.amazon.co.uk/gp/profile/amzn1.account.AFEPXBE6YUNGUUTN44D7GVP3FWGA/ref=cm_cr_getr_d_gw_btm?ie=UTF8

These buyers are using similar negative reviews across different brands for this type of product, which suggests that they are apparently being paid by our competitors to do so.

I urge you to investigate these buyer profiles and take appropriate action against such unfair practices. Maintaining a fair and trustworthy marketplace is essential for all sellers, and I appreciate your attention to this matter.

Thank you for your understanding and support.

Best regards,

Jancia