Bad service resulted in additional costs

I had a slow puncture on my vehicle because of a pothole that I've hit. I drove it for a while like that just keep on checking my tyre pressure. After a while I had a blow out on the tyre after driving a long distance. I took my vehicle to Tiger Wheel and Tyre and asked them to replace my tyre under the tyre insurance that I've got for it. The salesman told me when he looked at the tyre that they cannot claim it because my vehicles wheel alignment was out and the insurance don't cover when the wheel alignment was out. I told the salesman not to assume and first to check the alignment. After they replaced the tyre they checked the alignment and found that it is not the fault. He then came back to me and said that it is because of the slow puncture they cannot submit the claim and also because they don't have proof I've hit a pothole. <br> He then gave me a slight discount on the new tyre.<br> I fitted 2x Michelins. Michelin has got a promotion (not necessarily Tiger Wheel and Tyre) and I asked for the gift pack that is issued when buying 2x new tyres. The salesman refused to give that to me as he said they cannot give me discount and a gift pack.