Please help me.

I have been visiting supermarkets all morning.

When I had to pay I noticed:

"He' we have a huge trade imbalance !

I always buy stuff from you, but you never buy anything from me.

Best I can do is tarif you with 50% so I will only pay half of what you charged me."

NONE accepted my proposal, some even got mad and told me to fuck off.

What the hell am I doing wrong ?