First time user bad experience; 1- Once I placed an order, I found a tip amount of 6.69$ was added automatically without me requesting it or even mentioning it before checkout. 2-after order was delivered, a popup appeared to give a tip with 6.69$, i tried to edit the amount, and it was not allowing me to change it, so i ignored it and didn't submit it. 3-after an hour , I found my credit card got charged with 6.69$. 4-talked to support agent Sarah gelan asking for refund,she hang up on me!