Do you ever have those trips that start out as being something common place and everyday and then end up being a "revenge" shop visit the purpose of which is to try and pee off your original vendor by spending more money to go somewhere else?

Don't know what the heck I am talking about?

Let me try and explain.

Tonight I went to my local super market petrol station to fill up with diesel. However I had promised my daughter a little treat and they didn't sell the exact requirement in the garage shop. So I was forced at shrieking point over the road to the main supermarket to obtain such fat laden comestibles as my only daughter required.

Whilst there I thought I would investigate whether the shop had an arm band wallet into which I could place my phone while jogging. HA HA HA HA !!!!!

Yeah I know, I had to type that. I am about as likely to go jogging as, well, someone who will never go jogging. I have a new phone however which has GPS and it can track me whilst I walk and cycle and carrying a rucksack just so I can follow my route is a bit silly.

I found just the one. It was ideal. And it looked good.

Imagine my surprise when i scanned the item and the self service till said the item was not recognised. The very helpful assistant then whisked the item off me and said and I quote " We can't sell you this if it is not on the system!"

I then got customer services to drag a duty manager out of the office. Who just repeated what i had just been told. I still had no answer to why a product was in my hand and Sainsbury's wouldn't let me walk away with it. Do you think invading my personal space is part of the training at Sainsbury's - intimidate the customer? Either that or he is a bit deaf. The duty manager was all up in my face anyway. Mostly in a nice way but all the same....

In anger I drove all the way across town to a Tesco and bought a similar but cheaper product. I just wanted to be able to tell Sainsbury's that i bought it elsewhere when they ring up to tell me it is back in the system.