Fedhealth outstanding balance issues

I was a member with Fedhealth for 1 year, paid all my debits on time never missed anything. I cancelled with them and my last debit went off in February 2021. On the 5th of August 2021 i receive an Email saying that i owe them money and we went back and forth on Email them trying to tell me how much i owe and the amount changing the whole time and me trying to figure out why they did not disclose this amount when i asked if i owed anything extra before terminating the policy. They said they sent me multiple Emails which is probably true however i did not receive them as it is very likely that they went into my junk mail which cleans itself out. They could not think to 1.) Call me after getting no response from me and 2.) Give me the full outstanding balance that i owe. I had to call in to find out all the information properly. I am always happy to settle outstanding amounts but i do not appreciate being threatened when a very small attempt to contact me has been made. I did not have a good experience while i was a member there and even after not being a member for months they are still giving me grief. Its is very very poor service regardless of whether you are a current or ex member