Dryshield Basement Waterproofing

My basement is flooding and DryShield refuse to return my calls. It is impossible to speak to management or even leave a voicemail. I have left detailed message with an answering service several time. On Friday the answering service advised that she was sending a message to top management after I said I had I was posting my review on HOMESTAR to day Monday . I was waiting fore DryShield to resolve the problem before posting because I liked the installers and did not want to post a negative review. I tried to contact the sales rep Jonathan McMahon 416 434 7577 who signed the contract but his voce mail was full and would not accept messages. Problem:
I signed contract May 31 2017 fore installation on July 10 2017. The work was completed as scheduled. The first heavy rain the water backed up against a small basement window which is not used and gushed down the wall . The material to film the material to carry water away only covered the floor to below the window. The window did not leak previously. A minor problem a drain was not sealed as contracted. I should not have paid the invoice in full immediately at least until the first rainfall.