SWEARING AT THE CUSTOMER!!!

We are experiencing problems with the down-lights Francois purchased. The company who supp**** the lights said they would exchange the lights but we have to provide the receipt. We have requested this receipt from Francois several times. After he ignored numerous calls I've decided to contact Francois from a different number. He answered... I asked him when I will be able to get the receipt on which he rep**** that he is very busy. I've explained to him that I need the invoice as soon as possible. He then said F%&amp