Parkdean Resorts complaint: False information when booking

When booking our holiday some months ago for a long weekend in August (6th-9th) I was told because we had booked the lodges we had early check in on the Friday at 1:30pm. My booking app kept showing 4pm so yesterday 29th July I phoned parkdean (on hold to speak to someone for 58 minutes in total) to find out why this was showing this, and thank god I did as I was told it was 4pm check in and she didn’t know why I had been told 1:30pm. Of course I wasn’t happy with this so she said would you like me to get a manager to listen to your booking phone call of which I said yes! (Because I’d be lying of course!) so the manager listened and yes it was correct they had said I was able to check in from 1:30pm and had to honour this so would put on my booking 1:30pm arrival. Today I received a voicemail from the young lady who I had spoken to yesterday stating that cherry tree would not agree to our early check in and sorry but it would have to be 4pm and to call her back on this number to put a complaint in, I have phoned this number now twice! And both times I got a different person and have to explain the whole thing again and told someone will get back to me and still no one has! There are a total of 25 of us going away in 5 different accommodations family and friends for a big birthday celebration we have paid parkdean thousands for this 4 day break and really feeling at the moment if it’s worth going after reading all the past complaints put in this past week! And with the total lack of customer service I’m receiving, the young lady I had spoken to had been very good and tried her best but the rest of it has been a shambles and we are not even there yet!