Learn Farsi: من از این شرکت راضی نیستم به دلیل اینکه خدمات آنها اختلال دارد. - I am not satisfied with this company because their services are disrupted.

be dalil-e inke (due to the fact that / because) introduces a statement of fact or reality, so it takes the indicative mood. You are stating the actual reason (their services are disrupted), not expressing a doubt, wish, or hypothetical situation that would require the subjunctive.

What is the purpose of inke in the phrase be dalil-e inke?

be dalil-e means "for the reason of" or "due to." Adding inke (this that) acts as a grammatical bridge, allowing you to connect that noun phrase to a full clause with a conjugated verb. You are literally saying "for the reason of this, that their services have disruption."

Why do we use az (from) instead of bâ (with) after râzi nistam?

In Farsi, the adjective râzi (satisfied/content) pairs with the preposition az. So while in English you are satisfied "with" something, in Farsi you are satisfied "from" it (az in sherkat).

Why does the second half of the sentence say ekhtelâl dârad (has disruption) rather than using a form of the verb "to be"?

Farsi frequently expresses states of being or conditions using the verb dâshtan (to have) paired with an abstract noun. ekhtelâl dârad literally means "it has disruption," which is the most natural way to say "it is disrupted" in Farsi.