Worst n Irritating Experience

Ohh god...such a crap from Google..!!! Tried to give 0. Pchh...not possible.
I have a $25 worth of walmart coupon and I shopped for around $45 dollors and I couldnot place the order. There is no proper information message displayed atleast and instead it always kept telling me to change the cards. I changed 2 cards and finally gave up. I pity on the team who developed this wonderful app and the content management team too..KUDOS.

highly irritating about Google Shopping: Compare & buy, v21.0.0