Delivery resheduled 3 times

My experience with Mr Shopper has generally been good, but in the last 3 orders I have made (over 2 months) Mr Shopper or the courier made some mistakes. For each order arrives on the day of scheduled delivery and my order is updated with "The package arrived at the wrong courier. We are redirecting it. Delivery will be rescheduled". This isn't devastating, but it's certainly uncomfortable. I can understand that it happens once or twice, but this third time I am upset enough to leave this review. Even more annoying is that Mr Shopper is not available on email or phone to contact / complain about.