Matrix Cellular (International) Services P.Ltd — Charged in spite of defective non usable serviceservice

Two sim cards/data cards were hired from Matrix cellular international services P.Ltd at their CSIA international airport in Mumbai on the 26th of Jan 2012 for Germany and Switzerland.For Germany it was for one week and for Switzerland for 3 days ,with condition that i can cancel the Swiss card by 28th if i am not going to Switzerland.At the time of completing the formalities,it was observed that the cards were not getting configured on my Apple laptop,the company person Mr.Himanshu Maru tried to get the card working for more than one hour but could not succeed.I was than assured that the cards will work in the respective countries and that if they dont work,i will not be charged.
On arriving in Germany,the cards did not work.This was informed to the Company people by email.The Switzerland card was also informed to get cancelled as i was not visiting Switzerland.
On returning,many emails and telephone complaints were made as Rs,10,000 and then Rs,2,880.64 was again charged on my Visa Citibank card.
I have sent emails to Mr.Himanshu Maru,Mr.Hemant Thakkar,Mr.Abhishek Tripathi,[protected]@matrix.in,dorwin.[protected]@matrix.in and
Farhan.[protected]@matrix.in,with no result.
I been charged for services i could not use due to faulty sim cards which were not suitable for my laptop.
Suhas Kshatriya
962,Bhikusa lane,Nasik 422001