xfinity support

i returned equipment to our north augusta xfinity store yesterday and they would not give me a receipt for it and only gave me a post it note with a confirmation number [Edited: "Personal Information"] and told me that i would receive and email confirming that the equipment in fact had been returned. so far i have not received and email even checked my spam folder). i did a chat with albert last night and he stated that the email had been sent, yet i have not received one. i went in my account this morning and my box came up saying that i wanted to return it (even though i physically returned it to the store yesterday). since the system seems to be messed up i went ahead and checked the box to return it. they scanned the serial number yesterday when i returned the box so i do not know what the problem is and what to do about it.