Comcast/Xfinity Store, 800 Warren Street, Fall River, MA

I had the unfortunate experience of returning a cable box, power adapter, and remote to subject store today.  I was forced to wait over 40 minutes to address a 2 minute transaction, waiting behind multiple customers dealing with long mobile phone transactions.  I don't know if this is the case at all locations but, the failure to separate short transactions from long transactions seems to be a total lack of consideration for customer's time (they know what transactions customers are making when they check in).  The fact that there were three employees helping customers, all working EXTREEEEMELY SLOOOOWLY, only added to the frustration.  Years ago, before Xfinity Mobile, I completed the same transaction in less than 5 minutes (in and out the door).  Isn't there anything that Comcast/Xfinity can do to make short transactions less of an exercise in futility?