I paid for a product through this company named EKO which is an attachment for my stethoscope I returned it because it didn't fit correctly. The company supposedly sent my refund as of March 17th I still have not received it. This person blame it on this person and vice versa. It's a complete headache. No one seems to know what's going on called affirm they tell me someone will contact me in 3-5 Business days. DO NOT USE THIS APP! THEY ARE CROOKS!