In reality, it is irrelevant if you get a 1099 or not, and mostly irrelevant what the 1099 states. YOU are responsible for reporting ALL income to IRS on your tax returns whether you got a 1099 or not.
Any 1099s you receive are not likely to match your records. Take, for example, a job you do in November 2015.
If you are an accrual taxpayer you will claim the income from the November 2015 work on your 2015 tax return. If the company cuts you a check on December 31st 2015 they will include it on your 1099 for 2015 and an accrual taxpayer might have a match to the 1099 unless they also did jobs in December 2015 that were not paid until 2016. If the company does not pay for the November 2015 work until after January 1 2016, the accrual taxpayer will have no match either.
The cash taxpayer who did that job in November 2015 will not claim the income until it is received. So if the company cuts you a check on December 31st 2015, you won't receive the check until some time in 2016 so the 1099 from the company still will not match.
A company is SUPPOSED to issue a 1099 only for the fees and bonuses, not include the reimbursements. Some benighted CPAs have advised companies to 1099 for every cent disbursed to the shopper (including reimbursements) and one benighted CPA I am aware of even advised the company he works with to 1099 the charges the company paid for sending out PayPal payments.
Bottom line--look at your 1099s but don't try to reconcile to them closely. Keep good records yourself of what you receive, when you receive it and how it breaks out as to your taxable fees and your non-taxable reimbursements. A few years ago shoppers were receiving 'off the wall' 1099s from one company where perhaps they had earned $1200 in fees and $800 was paid in reimbursements, yet they got a 1099 for $20,000+. That is an obvious error that must be addressed with the company. If they had received a 1099 for anywhere between $600 and $2000 there is little point in trying to get it corrected because shopper records will document adequately what may or may not be happening with the 1099.