Just that postage isn't cheap these days and a couple of inner tubes would cost me about £3 and I am wondering what are the chances of them giving me anything in return?
If all the punctures are around the valve, you could just send them that section to save on postage weight. Maybe send one full tube, valve sections of the rest you have, a neutral-tone note explaining how many you threw away, and cross fingers.
If it's a real, recurrent defect that's new to them, they should be keen to learn about it and make good all your losses as thanks. If they already know all about it they might only replace proven defects. If they don't even do that they're being arseholes.
@moth
If all the punctures are around the valve, you could just send them that section to save on postage weight. Maybe send one full tube, valve sections of the rest you have, a neutral-tone note explaining how many you threw away, and cross fingers.
If it's a real, recurrent defect that's new to them, they should be keen to learn about it and make good all your losses as thanks. If they already know all about it they might only replace proven defects. If they don't even do that they're being arseholes.