Hi, yes it is a charge not fine. yes I got a popla code. however since 1 letter offered the charge back down at reduced rate and since I have sent £30 already, I was just thinking pay the remaining £20 and get it out the way. but im not really sure what I owe anymore regards

hello I am new to this forum. 2-3 months ago I received a parking fine when I overstayed in a free supermarket car park by 2 additional hours in july this year. the limit was 2 hours I stayed 4. I was charged £85 (reduced to £50 is paid quickly) I did shopping in the supermarket but also went uptown and forgot the time. anyway, I appealed this as I believed it was too harsh since the carpark was not full and I don't believe I cost the company or the supermarket £85 by my overstay. I sent a cheque of £15.00 to parking eye as I believe this to be a fair figure.(actually sent two because I didn't think they received first) this has since been cashed by parking eye but they demand more from me. They did however give me an additional 14days (starting 3days ago) to pay at the reduced rate again. the problem I have, is that I have sent two separate £15.00 cheques at least one has been cashed in(haven't checked bank to see if both were yet) so surely I would have to only pay £20.00 more, not the £50 or £85 they are asking for. on top of this, I rang their automated service number to pay tonight and after giving my details over the response given was 'there is no outstanding amount due for this reference number' so my issues are: I tried to pay but was told I owed nothing I am sent two letters demanding payment both on same day, both asking for different amounts I have already paid £15 (potentially £30) 3-4 weeks earlier, neither acknowledged but cashed I have no idea what I owe, no idea if I even owe it anymore, no acknowledgement of payment and not able to pay on phone. I am getting a little concerened because I have also received a letter before court claim and being self employed as a tradesman I rely on my credit rating a lot. Can anyone give me some advice please regards