Learn Hardcore Japanese: kingaku ni kakawarazu, goseikyuu to seikyuuteisei ni tuite keitaidenwagaisya ni kiku. - Regardless of the amount, I ask the mobile phone carrier about the erroneous charge and billing adjustment.

金額きんがく　に　かかわらず、　誤請求ごせいきゅう　と　請求訂正せいきゅうていせい　に　ついて　携帯電話会社けいたいでんわがいしゃ　に　聞きく。kingaku ni kakawarazu, goseikyuu to seikyuuteisei ni tsuite keitaidenwagaisha ni kiku.

Regardless of the amount, I ask the mobile phone carrier about the erroneous charge and billing adjustment.

Breakdown of kingaku ni kakawarazu, goseikyuu to seikyuuteisei ni tsuite keitaidenwagaisha ni kiku.

とto

noun-connector particle

Questions & Answers about kingaku ni kakawarazu, goseikyuu to seikyuuteisei ni tsuite keitaidenwagaisha ni kiku.

How are the main words in this sentence read?

Here are the main readings:

金額 → きんがく
にかかわらず → にかかわらず
誤請求 → ごせいきゅう
請求訂正 → せいきゅうていせい
について → について
携帯電話会社 → けいたいでんわがいしゃ
聞く → きく

A full reading would be:

きんがくにかかわらず、ごせいきゅうとせいきゅうていせいについてけいたいでんわがいしゃにきく。

What does 金額にかかわらず mean exactly?

金額にかかわらず means regardless of the amount or no matter what the amount is.

It implies that the action that follows is the same whether the amount is small or large. So the amount does not affect the decision to ask the phone company.

Why is there a に after 金額?