My teeth are in pain after getting zirconium crowns, what do I do?

I had zirconium crowns fitted 6 weeks ago. My bottom teeth are painful/sensitive when chewing.gums are red swollen and bleeding I’ve had a good clean with a hygienist but there’s been no improvement. Could you advise what you think this is? I had the procedure in turkey. So cannot go and see the Dentist. My own Dentist in the uk has refused to do any work on my teeth!