Lawnmower repair centre Wynberg

I took my ****eater to the Lawnmower Repair Centre in Wynberg to have a minor part fitted. Upon getting the ****eater back I tested it when I got home and I found that the choke was loose which wasn't before I took it in and the idling wasn't working properly. It took forever to get it started and it keeps dying as idling is now messed up. I took it back to enquire how the choke got loose and the idling messed up so badly and the owner immediately said it's not his problem his mechanic never touched anything. They wouldn't even look at it to see what the issue could be. The owner just kept saying it's not his problem and his guy did nothing which I find incredulous. I for one will not be making use of their service again.