Harrasing by incredible connection

I paid for a 16000 notebook for 3 years on time every time. The last payment of 91 was not deducted outomaticaly and i did not even pick that up till the send me a demand sms that my account is in arreas. Yesterday afternoon. This moring before an incredible store was openen they sms me again and phoned me 2x harrasing me over a ****ing R91. That is absolutely pathetic. I will never ever in my whole life buy anything from them again even if they are the last place on earth. It is fking pathetic.