Free Traffic Legal Advice

I come to this forum having found it later than intended, and so I realise I have not proceeded in the capacity as advised by the moderators regarding the parking fine.

I received a parking fine for overstaying the allotted time in the car park whilst using the gym, of which I was a member.

I was entitled to 3 hours free parking and I exceeded this.

There were signs in the car park stating the time limit and I cannot argue that I didn't see them as they were everywhere.

However, I was unaware of the time and I was using facilities for which I was paying a monthly subscription to use. I had contacted the company that sent the fine, and I paid the £20 fee to settle.

However, today I received a second fine that is now £170 for another day in the same car park for the same violation. The correspondence, I assumed for the same fine.

I have admitted being the driver, because I have contacted them previously, but all correspondence I felt I had dealt with the other one. Where do I stand on this. Do I have any redress on this. The company that issued the fine was smart `parking and it has now proceeded to Debt Recovery Plus