MENARDS Don't respect warranties Glendale Heights, Illinois

On 5/24/2010 I bougth Wall Air Conditioner, with one year warranty working very well but on 5/16/2011 I made proff that A/C and it did very strong noise and did not colling I call Menards for  warranty and a person Jessica from Appliance Department sad I needed carried the appliance to store, when We were in Devolutions Department the sad we needed proff we bought that appliance in Menards, we show Special Order contract GLNH 30136869 and SKU 623-7214 dated 5/24/2010, but somebody mentioned" those appliances were discontinued last year" and they tell me I needed show the original cashier receipt because they don't have any records of sales more 90 days, because I paid in cash, anothe way they can not received back the appliance. I'm partial disable (injury back and carpal tunnel both hands) and I decide left the appliance in the store because was hard problem for me and my wife move up and down it, we live in a third floor