Help in English

Hello Everyone! I'm Zeeya I need little help in English. that I want to write one of my clients (who provided us the wrong number) that please give your correct number. how can I say this in a professional way?

Sir: We will be grateful if you will provide us your number again, our team tried to contact you but your number is not available on WhatsApp and even we are unable to make any call.

(Please ignore my poor English)

Thanks in advance for the help.