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Thanks for posting in the Community, @mehul9k. 

We have updated our support options since we value data security in this forum. Thus, we're unable to provide you a phone number from this platform. I'd recommend contacting our Customer Support Team via chat. They can securely access your account and resolve your issues timely. They are available from 9:30 AM - 6 PM IST (Monday to Friday). I'll guide you how. 

1. Go to the Help menu at the upper right. 
2. Enter your specific concern and Talk to a human. 
3. Click Contact QuickBooks Support. 
4. Choose Contact Us. 
5. Enter your specific concern again in the What can we help you with? box. 
6. Click Let's talk. 
7. Select Start a chat. 
8. Enter your contact information. 
9. Choose Submit. 

The screenshot below shows you the steps. 

Once fixed, I suggest visiting this website: Resource Hub. It contains a list of articles that'll help you effectively manage your QBO account, income, expenses, GST, and banking.

Also, can I ask for the specific issues you're experiencing in QBO? Just click the Reply button below to add some details to make sure I've got you covered.

Please let me know if you need anything else. I'll gladly help. Take care.