There is no way to tell exactly what it is, but there are a couple possibilities as to what went wrong. The first thing I see wrong with this gel is that it was either not completely dissolved when you poured it, or you tried to run it too fast on high voltage in the rig causing the slight inconsistencies in band length. As a result of using high voltage, the gel will have an uneven and/or higher distribution of heat which could cause degradation in your sample. If you do not think that is the problem, then look at your controls. If your controls were samples that you know have worked before, and were treated the same with all the same reagents, but were from a different extraction then you could have had a contamination in your extraction. You should provide more information with your question in order to get a more definitive answer. You said you made an RNA quality gel. Does that mean you are running RNA samples? Is the gel made of agarose or polyacrylamide?  Is it precast or did you pour it in the mold? What is the percentage of the gel? What voltage did you use on the rig? What kind of buffer are you using?  There are a multitude of things that it could be without more information.   You should also never run a gel without a ladder and explaining what ladder you used. My PI would be rather perturbed if you came to him asking questions about a gel with no ladder. I have had extra bands show up in my PCR product because of non-specific binding of the primers to the template from not having the proper annealing temperature, and it has also happened from designing the primers wrong. 

Hello,

I also observed 4 bands with RNA extracted from plant tissues infected with an oomycete. May be you observed the rRNAs from the plant and a micro-organism present in your samples.

The samples are fibroblasts.

I think the right explanation for this is what Madam @Silvina Felitti has mentioned. infact i observed such banding patterns in fungal RNA