Disgusted with Reading CC and PMG

I want to share my disgust with the way my 4 ball booking was done yesterday with playmoregolf at Reading Country Club. I called Reading Country Club and spoke to Keegan at the pro shop to book carts for the 08H22 time slot for 14th October 2018. he then told me that he cannot see my name in that time slot and it is still available. I then told him that I wanted to confirm carts availability so that I can proceed to book. he confirmed that carts were available and that I must call back after I've booked the 4 ball on PMG. I then logged in, did the booking for the 4 ball and called Keegan back. He then confirmed the carts booking in my name (Mahen). To my astonishment, I get an email a few hours later to say that my booking has been rejected. I called Keegan only for him to tell me that he had booked another player in that slot. I reminded him that I had called earlier to confirm carts as I had booked the PMG slot. He said that the slot was available, but I said that he insisted that the cart booking can only be done if the slot was booked, so how did he confirm the carts for me, but then booked someone else. He didn't have an answer. i told him I will complain to PMG and he arrogantly said okay. I would firstly like to know if PMG allows this type of calls by the clubs to use the PMG allocated slots to book their own buddies even though a booking was made by a PMG member? Secondly, do the clubs really value PMG members or should I cancel my PMG membership?