Small bones in steers patty

Hi, I purchased 1 x Mix it Up Sharing Meal today (07/03/2022 @ 17:45) for my family via Mr D. Unfortunately the experience was bad due to small little white bones in the patties !!!??? What is going on here ?? This is the first time I experienced this with your burgers which I usually like! This is an expensive meal that went down really really bad. I am very disappointed as this to me is unacceptable because it appears to be obvious quality issues (regarding this batch of patties) and this was not picked up or ignored by steers and served to customers! I emailed only steers and no reply, just ignored. I think even sent a photo but nothing ... really bad customer service.