Their after-sales service was just so bad that I decided to never buy anything from that shop again. I want to buy in Spain?

Their post-sale service was definitely so bad that I decided to transfer seller from this to Spain.

The after-sale service is so bad that I have decided to shop from Spainish's network on Amazon's.

I'd like to purchase it in/from Spain instead of the previous seller due to their terrible costumer service.

1.請問售後服務不好英文 你譯的意思長度比中文多好多呢：[若你是說明你現在/將會的做法，只有一點修改便OK] Their after-sales service was just so bad that I [have] decided [never to] buy anything from that shop again. [若然你全都是past-tense表示你只是說記憶或這件往事，而不是表達你當下的意思(服務差寫成過去時態是正確的"因")。] 2.我想要在西班牙購買 你是自己走(飛)到西班牙買"東西"便是你譯的I want to buy in Spain. 若你的意思是"由/從"西班牙的公司買"東西"便可能應該是I want to buy from Spain.