Plastic clips have failed; Straps too short; no regulation obliging

Unfortunately, our delivery was not withdrawn; the delivery of the anchor was about 10 days before the delivery of the trampoline, it was referred to the Conditions that the contradiction has expired, there is no willingness to take the anchor back.
Unfortunate. The anchors are solid, but the straps too short for the height of the big trampoline and the plastic clips keep the forces did not stand and go on. Therefore, for us a bad investment.