Disgusting Customer Service

Good day

I went to the branch in Strand on 28/02/2022 to fill my tank with petrol not realizing the petrol attendant used Diesel instead. On my way home the car was jurking I thought it was a miner issue..... Later that week I tried starting up my car again but for some odd reason it did not want to I then aksed a mechanic to have a look and he confirmed im having problems because of the diesel that was entered to my tank. I contacted the garage and spoke to the manager on the 14/03/2022 who advised me theres nothing he could do however I should clean the plugs and drain the diesel myself but he will give me a call before end of business same day, sadley im still waiting. I feel the garage should take responsibility for their mistake made and not make it my problem. I work with people on a daily basis but never will I allow them to deal with a problem that was caused by myself or the company I work for. I've never had a problem at the mentioned garage before but I feel they should come with a solution cause after all Good Customer Service is key in any business. I will wait patiently for a response from them and I surely do hope it wont take a few days. They can contact me anytime during the day Ps:I do have the slip as proof of the transaction if necessary