Oxygen

I submitted a claim from my dermatologist for an in hospital procedure for my daughter. This procedure was done in May but I only received the bill from the doc in August. I assumed that te doc was dealing with Oxygen direct so never queried why I had not received one. When I phoned Oxygen to say I had received a bill, the Oxygen consultant told me to still submit even though it was late. The first claim was rejected as the doc had not put the ICD10 codes on the statement. I then got a revised correct statement which I submitted with proof of payment hearing nothing from Oxygen for a couple of weeks, I sent a query email and a couple of days later receive a email that the claim is rejected as it is stale and there are no ICD10 codes on the statement. Considering that this is the 5th or 6th time that I am claiming in as many years I am disgusted with the service. No wonder people are leaving Oxygen in droves.