One Pet Payment Problems

I have been struggling to get One Pet to accept claims that I submit from end of last year. We have been in constant telephone contact with them, as well as per email, but with every new claim we have exactly the same problem: our claims keep being rejected and we keep receiving THREATS about having to make payment and my bank account being debited! We have confirmed on various occasions what exactly is required from us and we are adhering to all requirements. Even our vet has gotten involved to assist. I am constantly plagued by claim rejection sms's and emails! I don't even know how much money we have spent on telephone calls! Every person we talk to gives us promises, but nothing ever gets resolved. We also never seem to get the complete list of requirements and it keeps changing depending on who we speak to. This company is completely *********** and have made my life a living hell!!! They have upset me so badly that I handed over proxy to my husband to try and sort these problems out, with no luck! I would like to put in writing that I WILL report them to the FBS and open a case of theft if my bank account gets debited due to their incompetence.