You can talk with the Dental Studio frankly regarding your circumstance. Be honest, no money and no job (on EI). I believe they will do a favor to you. You never know unless you have tried.) A ^* O/ e% ]" X; E: W
Declining to pay is the last choice but it is a option though if they are not reasonable. In addition, being unemployed is not easy regardless, but you are not alone. The job market as such could last a while or even worse. It will recover eventually.