Agreement and General release form breached

I signed an Agreement and General Release agreement on March 2nd. I was laid off from a large company in a company wide layoff I was told. I received my regular paycheck on March 9th. After the 7 day revocation period, per their written agreement I was to receive 2 weeks severance pay, on the next regular payroll day which was March 23rd. When I did not get it, long story short, per HR my direct boss stated she mailed the paperwork March 5th, but no one could find it. She had a copy of it, and scanned it in to someone. I advised I needed my money, as my bills are not going to wait, and they said the next date I could get the money would be April 6th. I argued but to no avail. Since they are in breach of the Agreement signed, I want to sue them in small claims court. Can I do this, and if so is there a monetary number that is reasonable to ask for? Thank you in advance.