Your not saying how many attempts you had trying to get on the bay,and he perhaps just decided enough was enough.
After all hes there to assess not to teach, maybe he could have given you a little bit of advice as to what you was doing wrong,but thats entirely up to him
You hold the Licence so you must have done something right to get it,but a Licence does not give you experience which only comes with time.
Given time and more experience,you will see someone who is having the same problem you had, you will be like a lot of us be thinking poor sod I was that bad at one time but won`t admit it 