Tescos Delivery cheek

I've been using these for a couple of years now and never any problems, just got my shopping this morning i had ordered and the cheek of them... the sirloin steak cost 6 euros compared to the 10 guide price, that's ok but the Kittensoft 16 roll toilet tissue was 7 euros online... They substituted the kittensodt for kittensoft 16 rolls double layer and that cost 11.99...wtf
   I had 130 in card for order that was to cost 129.50, they have it written on their site that they will never substitute anything more expensive and the guide price will never be more expensive.
   Anyway they overcharged guide price by 2 euros and so my dodgy Irish bank charge 5 euros immediately for overdrawing... i send back the toilet rolls out of principle and ring the Tescos and get put through to some cheeky English bloke who gives me some spiel about quality to which i quote the no substituting to more expensive goods and that because my steak was cheaper they thought they would just add in toilet roll 5 euros more expensive, he says that isn't the case and that i would have to send them details of the claim, i say goodbye and then find the claim that says that if you get a substitute that is more expensive you will only pay the original price of the initial product... i ring back.
    I speak to some English woman called Hayley and after she stopped laughing she agrees and says the other bloke was wrong and that she will refund the toilet roll overcharge 5 euros and she would refund me the 5.50 delivery charge...common sense prevails at Tescos... now i got the choice  to nip over the wall and go to Dunce ****s to get some **** roll or get charged twice as much at the corner shop.