Bad service discovery

It has now gone into 90 days and discovery has still not paid my hospital bill!!!! I have spent a fortune speaking to different consultants, having to explain everything each time I phone! Every time I get told it’s still under review... my bills are heading for hand over discovery, you can’t keep stalling... you keep asking for reports! How many times do the doc need to tell you it was an isolated issue, nothing was with held from you!! It is the 3rd request I’m now making for a manager to call me, I need this sorted out! You not going to pay to clear my name once I’m handed over 😡 I’ve been calling every second week for 3 months and still getting no answers