Striped lug bolt


Had hard time unbolting rear wheel lug nuts after tire shop replaced tires ~6 month ago. 3 bolts are very tight to bolt and cant tight them, because they just keep spinning. I guess bolts and hub is cross striped
Wont be able to prove anything to a shop so I am on my own. Never faced with this type of issue, so I am confused what part to replace exactly. Per google, parts name is rear spindle knuckle hub. Do I really have to replace whole assembly or this small disk with lug holes can be replaced separately? 2000 S500.





