I have just spent half an hour at your store waiting for your counter staff trying to find a invoice to enable exchange of faulty fittings. Not only has this wasted my time, your counter staff time but lots of customers who had to wait behind me because your staff was trying to find a invoice. This is crazy!!! The fittings are in your packets, surly the manager should have discretion to avoid all this wasted time. The goods cost £10 my time will be over a hour a cost of £75. Any other plumbing company I use can use discretion. The good are two packets of inserts 20652 your system in store only goes back to 28th July due to the large number of transactions we make. I had hope that by ordering this product today they could of use that as a invoice reference apparently not. This is not the first time we have had difficulties in returning faulty goods, but I hope common sense will stop this from happening again. I await your reply and offer of compensation for my time.