Email blocked can't send to company

After my last review on finrite Telkom i received an email detailing why my claim was regreted and given 30 days for responding if I'm not happy with their outcome .here I am writing my response only to realise my email address is blocked I cannot send emails any longer to them. How will I state my case if I can't write it ..... Finrite should just close shop cz you are ******** even after you regretting my claim you still bill me 4 the insurance