Unknown mattress length

I contacted Simmons head office who told me that the longest mattress they make is 2,2m which is 10cm shorter than the one I bought is 2005. AS I am 2,04m tall it would be fine. Today Mr Pires told me the longest they make is 2,1m after consulting with his director. Its a completely *********** company. I shall contact Serta to get a mattress