Most frustrating booking experience ever. App show...

Most frustrating booking experience ever. App shows lots of available tee times and whenever trying to book it either enter a loading loop.. or said tee time no longer available. Spent 20 mins in trying to book 8 different tee times and all the same result. This happened at least in 3 separate occasion (100% failure). If app and site doesn't work, really don't understand why they bother spending marketing money to frustrate golfers.