Accounts department is dreadful!!!

I signed up to The Unlimited excited about all the hype they drum up by claiming that we can claim every 3 months for minor repairs to the vehicle and what's more after 30 days you can claim for existing damage. I tried to claim in March but they declined saying that my subscription was not up to date. I was amazed but anything can happen so I paid an additional months fees into their account. Low and behold they have rejected another claim because of non payment of subscriptions but I can prove all payments since January are up to date and paid. I queried this with them. They said yes sorry out fault and promptly send out another cancellation of subscription as soon as I put the claim through again. I am so put off by them. I have not been able to claim one, let alone the 3 times I could have claimed by now.