The Barbell Cartel has received mixed reviews from users. Some customers praise the excellent service, noting that minor mistakes in orders were quickly rectified and that the clothes and designs are great. However, others have reported poor customer service, with issues such as incorrect items being shipped, delayed responses to emails, and being charged restocking fees for mistakes made by the company. Some users also mentioned poor quality of the clothing, with items pilling quickly and the company having an unprofessional attitude. Overall, the reviews are varied, with some customers having positive experiences and others facing significant issues.