Post office workers refusing to deliver TT shop packages

I’ve done TT shop for over a year now. It’s different every month but I usually have a new product coming once a day. Since last year my mailman makes comments to myself and my husband about the volume of packages i have. It’s gotten to the point I avoid him completely because I know he will be rude. I’ve called my local post office to express my discomfort many times and I’m never able to talk to anyone via phone or email. My post office man made a comment to myself husband the other day that we may need to start picking up our packages from the post office due to the volume(I was getting 10 a day for about a month) I haven’t read anywhere if this is a policy USPS has. My question is is USPS setting a limit on how many packages they’ll deliver? I wish TT shop would switch over do a package carrier like fedex or amazon as I don’t have this issue with any other carrier. USPS also stockpiles my packages for multiple days and delivers them at once which is annoying since I’m waiting on them to arrive.