Need Telegram Mass DM Service

I am looking for a professional Telegram bulk DM service provider for a long-term partnership.

=== What I Have ===
- 290,000 phone numbers (country code +7)
- Customer data (phone)

=== What I Need ===
1. Send 1 promotional message to each number via Telegram DM
2. Message will contain a link to my Telegram channel
3. Provide detailed delivery report (delivered / failed / not on Telegram)
4. Ongoing monthly batches

=== Requirements ===
- MUST be able to send via phone number import (NOT just scraping from groups)
- Safe sending with anti-ban protection
- Daily sending capacity: at least 500-1000 DMs per day
- Delivery rate tracking and transparency

=== Budget & Payment ===
- Small test batch first: 100-500 DMs to verify quality
- Then scale up based on results
- Price: please quote per 1,000 DMs
- Payment via: Crypto (USDT) / Wise / PayPal

=== What to Include in Your Bid ===
1. Your price per 1,000 DMs
2. Estimated delivery rate (what % of messages actually reach inbox)
3. Your setup: how many accounts, proxy quality, anti-ban strategy
4. Do you provide delivery report? (Yes/No - with sample)
5. Any past experience with Russian phone number campaigns

=== Please Note ===
- If your approach is "scrape users from groups and DM them", this is NOT what I need.
- I already have the phone number list ready. I need someone who can import and send.

Looking for a reliable long-term partner. Serious bidders only.