[問題] 請教大省333,上網mpro550可否調高又降消失
敝人是用大省333
mpro550半年是吃到飽,半年後也許會短時間網路需要吃到飽
例如這個月調到mpro950,下個月不需要網路吃到飽了
哪我還可調回去mpr550嗎?
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