My employer said he will contribute 1800 to my PF but have contributed less. Need help.

Hi
My offer letter states x+3600 salary per month
out of this in the offer letter they have stated 1800 as the contribution to PF by employer
And in my salary slips it shows x+1800 where 1800 is contribution to PF directly.
When i log in to EPFO website, the contribution per month by employer is 550 and employee is 1800.
Also, the entries for my joining month and notice period month are not there.
Is that right? I do not understand this as this is my first time handling this.

Dear Kalpana Gupta,
Sorry to infor you that you have not verified facts before concluding that your Employer has not remitted EPF Contribution of Rs1,800/-Please download your EPF Pass Book.There is no short payment.Employer has correctly contributed Rs550/- to EPF & Rs1,250/- to EPS.Please go through your EPF Pass Book