I believe if something doesn't use a standard pump to be inflated the pump MUST be included with the product and NOT sold separately. Obliging people to buy a product because the y bought another product it is not a good politic.
Firstly, we apologies for the uncomfortable experience created by our product.
We take great care to ensure that important matters such as this are properly managed.
Your feedback has been already passed to the production line and we will keep striving for the best products.
In light of this, you are welcome to exchange or refund in any of our 3 stores, which we hope will be acceptable to you.
Please contact me should you have any further cause for concern.
Thank you so much.
Decathlon Hong Kong Watersports Team (Service)