@Kmwkmc49
The $10 Limited Talk/Text Plan does not include any Data, so I assume you've purchased a Data Add-On?
Failed AutoPay is a known bug which seems to randomly affect a few customers every month; their Plan does not automatically renew and their AutoPay reward isn't applied.
If your Plan did automatically renew then your AutoPay Reward was (probably) properly applied ... although you may have misunderstood the Plan price if you selected one of the promos with (confusing, even misleading) wording about AutoPay, many promo customers apparently neglect to read the small print.
If your Plan did not automatically renew (and your AutoPay Reward wasn't applied) then you should message the mods to have it corrected (and adjusted), especially if it's a recurring issue.
Discrepancies between Talk minutes, Text counts, and Data usage are common. The billing measures these things from what the network-side hardware knows it has sent/received, not from what the device-side software reports. Billing on voice calls is often rounded up to the next full minute (so 1 minute and 1 second counts as 2 minutes, etc), this evil practice has actually resulted in Telus/Bell facing repeated class action lawsuits over past years, yet (outside Quebec) it still prevails. I imagine something similar could occur with Data usage, all those loose bits being rounded up to the next (KiB) increment, although it's basically impossible to confirm because wireless data always has extra overheads (for data headers, error correction, re-transmitted packets, etc) which cannot be directly measured by the customer (or his stopwatch, or his software). Text/SMS is more straightforward, although "long SMS" messages are in fact multiple SMS segments spliced together so they can count as multiple Text messages.
