I feel ******

So I was given an amount to pay for an additional member . However when the month end came I was given a higher amount to pay. When I queried the situation the consultant couldn’t explain it to me I and they keep sending me the same message the billing statement doesn’t explain anything . I’m fed up of them they keep going in circles but won’t get someone to give me a call and explain why they taking an extra 500 at the end of the month .