Diggers Pool Liners Had my pool liner professionally installed with a pad and the seams are leaking along the edges. (((redacted)))Crestwood, IL 60445 Illinois

I bought a 21 inch round by 54 pool liner and it has leaked since I bought it.  It was professional installed by Errands Pool installers in June.  It was installed with a pad and when it started to leak, I had it inspected found out the seams were not sealed.  It is suppose to carry a warranty but no one will return my calls to replace the liner or the cost of reinstalling the liner. The liner is registered with Vinyl Works Liner and I do have the Serial/Lot Numbe: 100205637.  The cost of my liner $241.97.  Installation by professionals was $400. My husband is handicap and needed the pool for his therapy.  Pool is unuseable.