Describe the bug
The contact form accepts alphabetic characters in the phone number field, allowing submissions with incorrect input. The form should require only numeric input for the phone number.

To Reproduce
Steps to reproduce the behavior:

1. Go to the contact form on the website.
2. Enter alphabetic characters in the phone number field.
3. Submit the form.
4. The form submits successfully, even with invalid phone number input.

Expected behavior
The phone number field should only accept numeric input. If the user enters any alphabetic characters, the form should display an error message and prevent submission until a valid phone number is provided.

*Screenrecording
https://github.com/user-attachments/assets/4a32b24c-cf20-4ec5-b17c-d47858ef3c7a

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
The contact form should validate the phone number input to ensure that users provide a valid phone number. Implementing this validation will improve user experience and reduce invalid form submissions.