Shocking Claims Processes

I am absolutely shocked at Miway. For the past 5 years, I received a call from their sales agents to join them and each time I refused. Then during March this year I made the biggest mistake ever and accepted their offer. I recently submitted a claim for which my TV suffered surge damage and the process has been a complete nightmare. They have determined that the damages are legitimate but now stating that they need to investigate if I had insurance cover for the past ten years. They have shifted this process to me. So I had to dig through my archived emails and provide policy schedules from 2011. I sent them my previous insurer schedule as well which shows a NCB of 7 but now because they cannot get in contact with this insurer they have now shifted this onto me. It seems like they doing underwriting now at claim stage. I am so frustrated with this as this seems like they are looking for any excuse not to honor this claim and further insulting my integrity. What kind of an insurance company is this? Will definitely be moving my policy