- - Which telephone numbers can I use to reach the Help Center?
- - What are the customer service center business hours?
- - I would like to verify the status of an open customer service register. What should I do?
- - What data is required record a complaint?
- - Is there support for the hearing impaired?
- - How does the refund process work?
- - How to issue a second copy of my tax coupon?
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