Wrong choice of tariff plan

Dear community members,

I purchased my 24-months tariff plan 4 hours ago and I am not happy about it.

I came to buy a Flexible tariff plan to the shop to get urgent internet access, knowing that on 1st of January I move to the US.

I was told that there is no Flexible SIM cards and I have to order them online and wait for 10 days. Also that I can cancel my contract due to moving outside of the EU (not mentioning 3 months fee - which is actually a fee). And that I can downgrade my tariff plan in 6 months.

I agreed on 2-year plan on these conditions, but when I came home and was able to translate the contract and the web site I understood that it was, nicely put, not exactly true.

Is it still possible to change to a flexible contract? I already spoke with customer service - they told me to write an official complaint, which I've prepared, but do not want to be involved into this since I just wanted to have internet for 6 months… I'll try my luck at the shop where I signed in 4 hours ago - but I doubt something will work out there.

Thanks you in advance, sorry for bothering, I am always reading the contracts carefully - but this time I had to fully rely on words …

UPD: sorry could you move it to Mobile? It is not about DSL. I was looking into flex DSL first, but could not wait 2 weeks for a technician, so took a mobile internet plan.

edited by Joe Doe: moved from English broadcast dsl to English mobile