Samsung Warranty worth nothing

Hi, I have 8 Samsung Mobile products and have recently moved from the UK with these products, Now my Samsung S6 wont work (unable to make or receive calls, send text or connect to data, but only does this around 80% of the time?). Took it to Samsung repair centre only to be told that Samsung will not repair this product under warranty as i bought it in the UK. Surely Samsung is a International company and nowhere in my warranty document does it say that the warranty is only valid in the UK? I think it is extremely bad show from Samsung as this clearly is a product fault and should be carried under the manufactures warranty not matter where in the world you are. So Samsung expects me to get rid of all my Samsung UK products and purchase Samsung SA products? Maybe i should get rid of all my Samsung products and move to a company that will honour a warrant