Very bad rules and service at makro

I purchased a garment steamer from makro online on the 5th of July and it got delivered on the 11th of July so from then it's 2 weeks to return so the last date of return should be 25th July I went instore on the 23rd to return and they told me they can't take the item because it's online only isn't it stupid that way now they refusing to collect and return my money because they say I have passed 2 weeks and I regular customer I purchase alot of items online and instore don't think I will purchase now because they have stupid rules, now I have to sit with the garment steamer when I won't be using it even. I even called customer service 3 times the guy said he's gonna get the marketing manager to connect up until today no1 has contacted me . They work very stupidly and I didn't know how online only works thats the reason I went instore to return.