Triumph Insurance

Anyone had any agg with Triumph insurance? Covered one of my bikes about a month ago. Three days later they come back threatening to cancel insurance and wanting an additional £180 for a motor accident in one of our vans weeks ago we know nothing of?? Van has no damage.. Hmm,,, ok, so i reluctantly agree to pay (guilty until proven innocent) or they will cancel my policy on the condition they return my over payment once this gets sorted out...
Deep breath, move on.
Another 28 days later, they demand a further £190 for an incorrect date on a speeding fine i had a couple of years ago.
Both the claimed accident and speeding fine (which i did do) were in my van and car.
I diid admit the speeding points to the insurer, but either myself or they got the wrong date down.
I called them and told them i wanted to cancel and they wanted another £150 to cancel. Bringing my outlay to £337 for 31 days of cover.
I told them to FO for anymore money as i have already paid £187.
Not sure what to for cover now, but anyone else had trouble with them.