Coleman Portable Spa review: Respecting my warranty

I received a Coleman portable Saluspa for my birthday from my children. I completed the necessary papers for the warranty. There is a leak in the liner and the temperature is irregular. When I contacted Bestway with this issue, they had everything except the proof of purchase, and or receipt. I received it as a gift from my children who cannot locate it either. This is my second spa and I would think the warranty would be respected without a receipt as it was a gift.

Thank you for your time and attention.

Michelle the Mermaid needs her spa.