The pronoun that complete the elliptical cause is "I" because sentence uses the word "My" in the very beginning of the sentence so that person is either talking for themselves or someone else, if for someone else than a name would be in The list of answers.
The verb phrase is
show us the video
I have had an experience in your store that I would like to share with you. I asked an employee for assistance, however she ignored me. She continued to say that I most likely did no have any money due to the fact that I am a kid. I however had just had my birthday and I had received money as a gift from my father, and I was planning on spending it at your store. But due to the unkind and belittling behavior of the employee I chose to spend my money else where. This is not how any costumer should be treated. I hope that this issue will be taken care of. Thank you.