Poor poor service by the sales assistant. (male sales assistant).

I went into the store to buy balloons for my niece's birthday. I paid for the balloons to be blown up, with the helium air. I paid for nothing something I could have done at home the balloons came out a small as a melon when I got home I blew the balloons by myself and they were the size of a watermelon so they useless and cheap job that was that by this sales assistant really put me off disappointing.