MS Office Skills in a Resume... I need advice!?

Hello! I am applying for working as a receptionist at an office. I am proficient in Word and Powerpoint. But I have little experience with Excel: I know how to format tables/charts and create them. I know how to work with basic formulas. I don't know anything about Pivot tables or Macros ( I am currently looking at tutorials that you can find online for free to have some knowledge on these). I haven't been getting phone calls after applying for those positions because I wrote on my resume that I am experienced in Word and PP only. Should I write "basic knowledge in Excel," or "little experience in Excel," or write nothing regarding it? Thank you.