Fee escalated

Earlier this month I had received a reminder email from virgin active stating that if I do not go to the gym 2 times before the 28th of feb my fee will go up from 50% to 80%.Since then I went to the gym 2 times- last week and yesterday but still my subscription fee has gone up to 80%. <br> as usual when i try to call them they make me hold for hours and increases my phone bill.<br> please sort this out immediately and pay my money back!