4Eva Ball Fraud

I purchased 3 of 4Eva ***** at a show stand and lady confirmed that they have a lifetime gaurantee no matter which breed of dog I have. The ball barely lasted 2 weeks and was completely distroyed. I then contacted them to replace damaged ball as per their gaurantee but was then told that it is impossible for my dog to destroy said ball. They even accused me of driving over the ball to destroy it yet the ball still has a perfect shape. I then send them photo's of 2 x giant sized igloo's a self filling plastic water container that has a large surface and super difficult to distroy and a solid very large plastic ball the dog destroyed. I also offered that the ball is put on independent trial at Onderstepoort and if destroyed they have to pay for trial and if dog cannot destroy it in 2 weeks I will pay for trial. They simply stopped responding and refuse to comply and accusing me of having a vendetta against them!! This to me is completely unprofessional and obviously doing false advertising to sell their product. I have in the meantime bought Boomer ball which have actually lasted for full period of time with no signs of it being damaged like this ball. They should state in their gaurantee that it is only suitable for certain breeds and not charge you R500 for a ball that lasts 2 weeks at most. I have 8 other people having the same problem with them