Hi, I had

Hi, I had root cleaning on my rear molar and temporary filling due to an infection about a month ago. I was told to come back in February for a checkup to discuss further action which could be either an extraction or a full root canal and crown. The temporary filling crumbled and I had it replaced today. So far I have paid Band 2 charges of £56.30p, plus another £20.60 for the replacement filling today (I think because I asked to be seen quickly as I was in pain and worried about the infection causing damage to the bone). I asked about the cost of crowns and was told I would pay a band 3 charge on top of what I have paid so far if I go with a metal crown, i.e. £244.30, or another £395 if I want to go private and have a ceramic crown. From what I read about charges I think I should not have to pay out the full £244.30 if I opt for a metal crown as it should be part of one course of treatment. Am I right? Also, if I go with the private crown, should I expect to offset any NHS fees from the cost?