Terrible service

I am revolted by the way I have been treated by Momentum Health. I requested a pre-authorisation for a dental procedure which my son needed and did not get this on time from Momentum. I received an email from them informing me that the quote needs to be forwarded to the dental pre-authorisations department, but they failed to tell me that the codes I sent through is not enough and they actually need a physical quote. Now they are point blank refusing to give me pre-authorisation, the procedure was done almost a month ago! This unclear communication from their side seems to be an easy way to opt out of a claim. Im disgusted and absolutely revolted by this company. Take, take, take, bout dont you dare try claim!