Smart shopper voucher

I received an sms detailing days double points would be awarded on smart shopper purchses. On 13 June I went to do my bulk shopping in order to redeem the voucher & points. Upon entering the shop I went to the printer but it was not working. I approached an employee to fix the machine while I went to do my shopping. An hour later I returned to the printer only to be told the person with the key had gone to a funeral & had not returned yet. I enquired what should I do & all they told me was they couldnt help me because nobody had a key. This is not the first time I had to forfeit points because I could not print a voucher. I would like P&P to give me the points I lost since I purched goods to the value of R1480.80. The behaviour was very unprofessional & I feel its time managment should ensure that machines are working at ALL times. I am a loyal supporter of P&P & do all my grocery shopping at your store & am growing extremely tired of the bad service regarding smart shopper points