I used a language translator to know more about your question, cctvcomputerserv.
I'd like to verify what you meant by using WhatsApp without billing so I can give you the correct steps. Sharing with WhatsApp is just for links to invoices where your customers can click and it'll route them to the webpage and view their invoices. If you're referring to sending invoices to WhatsApp doesn't require any charges.
You can use this reference for more details about Send invoices with WhatsApp.
Any additional information about your question is much appreciated. Take care.
Āmi āpanāra praśnēra samparkē āra'ō jānāra jan'ya bhāṣā anubādaka byabahāra karēchi, sisiṭibhi kampi'uṭāra kampi'uṭāra.
Bila chāṛā'i hōẏāṭasa'ayāpa byabahāra karē āpani kī bōjhātē cēẏēchilēna tā āmi yācā'i karatē cā'i yātē āmi āpanākē saṭhika padakṣēpa ditē pāri. Hōẏāṭasa'ayāpēra sāthē bhāga karā kēbalamātra cālānēra liṅkagulira jan'ya yēkhānē āpanāra grāhakarā klika karatē pārē ēbaṁ ēṭi tādēra ōẏēbapr̥ṣṭhāẏa niẏē yābē ēbaṁ tādēra cālānaguli dēkhatē pābē. Āpani yadi hōẏāṭasa'ayāpē cālāna prēraṇēra kathā ullēkha karachēna tabē kōna'ō cārjēra praẏōjana nē'i.
Hōẏāṭasa'ayāpēra sāthē cālāna prēraṇa samparkē āra'ō tathyēra jan'ya āpani ē'i rēphārēnsaṭi byabahāra karatē pārēna.
Āpanāra praśna samparkē yē kōna'ō atirikta tathya anēka praśansita. Yatna nibēna.
