Whirlpool 5.9 cu. ft. Gas Dryer - WGD5000

I have had it just over one month and now it will not deliver heat.  It work just will not dry.

We have had this dryer for less than a month, and it works ok for light loads.  It is not very good, however, with towels and heavy loads.  They never get dry.  We have to keep adding time after the longest cycle to get them completely dry.  When we...